机械制造技术2021秋季学习通课后章节答案期末考试题库2023年

机械制造技术2021秋季学习通课后章节答案期末考试题库2023年Welding

distortion

is

caused

by

(

).

参考答案:

rapid

heating

and

cooling

Which

kind

of

metals

is

commonly

used

in

die

casting?

参考答案:

Aluminium

Which

process

is

UNSUITABLE

to

produce

this

bronze

lion

statue?

参考答案:

Welding

Which

is

the

advantage

of

die

casting?

(

)

参考答案:

good

surface

quality

Manufacturing

converts

(

)

into

products

参考答案:

materials

What

is

a

sub-assembly?

参考答案:

部件

Investment

casting

is

applied

to

produce

(

)

参考答案:

all

of

the

above

Which

process

is

the

most

suitable

to

produce

electric

motor

bodies?

参考答案:

Casting

Weld

quality

can

be

examined

by

(

).

参考答案:

all

of

the

above

Evaluating

weld

quality

by

break

the

workpiece

to

test

its

strength

is

known

as

(

)

参考答案:

destructive

testing

Rolling

process

is

applied

to

produce

(

)

参考答案:

all

of

the

above

The

welding

defect

of

entrapping

nonmetallic

material

in

weld

metal

is

known

as

(

).

参考答案:

inclusion

In

a

rolling

process,

the

metal

is

(

)

参考答案:

plastically

deformed

Which

welding

process

can

ONLY

be

applied

on

sheet

metals?

(

).

参考答案:

Resistance

welding

What

is

the

temperature

in

an

electric

arc

welding?(

)

参考答案:

5000-6000°C

Industry

3.0

realizes(

)

参考答案:

flexibilization

Which

of

the

following

is

NOT

fusion

welding?

(

)

参考答案:

Friction

welding

AC

welding

machine

can

be

used

on

(

).

参考答案:

steel

DC

welding

machine

can

be

used

on

(

).

参考答案:

all

of

the

above

在线学习占本课程总成绩比重约为（

）

参考答案:

40-50%

Sand

casting

pattern

design

should

provide

for

(

)

参考答案:

all

of

the

above

(

)

can

be

used

in

casting

process

参考答案:

all

of

the

above

Casting

process

can

be

applied

on

metals

and

(

)

参考答案:

plastics

Acetylene

gas

(C2H2)

is

(

).

参考答案:

all

of

the

above

Why

do

casting

processes

produce

minimal

waste?

参考答案:

Because

excess

metal

can

be

used

again.

Fusion

welding

joins

two

parts

by

(

).

参考答案:

high

temperature

In

a

typical

riser-gated

casting

system,

cavity

①

depicts

(

)

参考答案:

core

In

a

typical

riser-gated

casting

system,

cavity

②

depicts

(

)

参考答案:

riser

The

welding

process

using

flooding

gas

(e.g.

Ar/He/CO2)

to

improve

welding

quality

is

known

as

(

).

参考答案:

gas

metal

arc

welding

Polymers

usually

referto

(

)

参考答案:

plastics

The

welding

process

using

arc

shielding

by

a

cover

of

granular

flux

is

known

as

(

).

参考答案:

submerged

arc

welding

Which

statement

is

correct?

(

)

参考答案:

Both

hot

rolling

and

cold

rolling

reduce

grain

size

in

metals.

Industry

4.0islookingfor(

)

参考答案:

customization

As

a

forging

machine,

gravity

drop

hammer

can

produce

a

force

of

(

)

参考答案:

20tons

Upset

forging

is

known

as

(

).

参考答案:

heading

In

soldering

process,

the

melt

point

of

filler

metal

is

below(

).

参考答案:

450℃

The

chemical

reaction

is

applied

on

(

).

参考答案:

thermite

welding

In

brazing

or

soldering

process,

melting

point

of

the

filler

metal

is

(

)

the

metal

to

be

joined.

参考答案:

lower

than

Which

process

is

the

most

suitable

to

volume

produce

the

paper

clips?

参考答案:

Presswork

Which

product

CANNOT

be

made

by

extrusion

process?

参考答案:

Valvebodies

In

a

typical

riser-gated

casting

system,

cavity

③

depicts

(

)

参考答案:

sprue

Which

process

is

the

most

suitable

to

volume

produce

the

bottle

caps?

参考答案:

Presswork

Which

process

is

the

most

suitable

to

volume

produce

angle

plates?

参考答案:

Presswork

Which

process

is

the

most

suitable

to

produce

steel

I-beams?

参考答案:

Rolling

Forging

is

economical

for

(

).

参考答案:

large

quantity

production

Asaforgingmachine,hydraulicpresscanproduceaforceof(

)

参考答案:

80000tons

Which

forging

machine

produces

the

largest

press

force?

(

)

参考答案:

Hydraulic

press

Forged

parts

have

(

)

参考答案:

both

of

A

and

B

Which

casting

process

can

provide

the

products

the

highest

mechanical

properties?

(

)（哪种铸造方式获得的铸件机械性能最好？）

参考答案:

Squeeze

casting

Boring

processes

are

to

make

(

).（镗削工艺用于加工什么？）

参考答案:

bigaccurateholes

Open-die

forging

is

to

make

a

blank

to

be

(

).

参考答案:

shorter

and

thicker

To

remain

a

constant

cutting

speed

turning,

spindle

speed

should

be

(

)

as

the

workpiece

diameter

reduces.

参考答案:

increased

Which

of

the

following

is

solid

state

welding?

(

)

参考答案:

Coldwelding

这门课的成绩由几项考核组成？

参考答案:

4项

该课程使用双语授课、英语考试的目的是：

参考答案:

以上均正确

Which

of

the

following

is

NOT

solid

state

welding?

(

)

参考答案:

Resistance

welding

这门课的主要内容是什么？

参考答案:

机械制造工艺与技术

Solid

state

welding

does

NOT

require

(

).

参考答案:

electrodes

如果期末卷面考试只得了30分，意味着：

参考答案:

平时作业、综合设计、在线学习需要更努力的完成

Which

welding

process

is

suitable

to

join

tubular

parts

in

mass

production?

(

)

参考答案:

Friction

welding

如果期末卷面考试得了90分，意味着：

参考答案:

得到了大约18分的总评成绩

关于上课缺席、迟到的理解，以下正确的是：

参考答案:

以上均正确

如果考试或书面作业被证明是抄袭的，惩罚是：

参考答案:

抄袭者和提供答案者均得零分

Afour-jawchuck

is

used

to

hold

(

).

参考答案:

an

irregular

shaped

workpiece

Reaming

processes

areto

make

(

).

参考答案:

accurate

holes

Cutting

speed

of

drilling

is

the

linear

speed

atposition(

).

参考答案:

①

Polymers

usually

refer

to

(

)

参考答案:

plastics

Which

of

the

followingprocessescan

make

the

best

surface

smoothness?

参考答案:

Honing

Sand

casting

pattern

design

shouldtake(

)intoconsideration.

参考答案:

all

of

the

above

ACNCmilling

machine

that

can

use

different

tools

to

automatically

perform

a

variety

of

machining

processes

is

called

(

)

参考答案:

machining

center

Grinding

wheelsare(

)cuttingtools.

参考答案:

abrsive

In

a

typical

riser-gated

casting

system,

component

①

and

②

depict

(

)

参考答案:

side

riser

and

top

riser

Which

process

is

the

most

suitable

to

produce

this

cast

iron

valve

body?

参考答案:

Sand

casting

Which

process

is

the

most

suitable

to

produce

this

drain

grill?

参考答案:

Sand

casting

In

a

sand-casting

mould,

the‘core’is(

)

参考答案:

both

of

the

above

Casting

sandsshouldhave(

)

参考答案:

all

of

the

above

Precise

forging

is

known

as

(

).

参考答案:

flashless

forging

(

)

is

a

defective

surface

of

casting.（以下哪项属于铸件表面缺陷）

参考答案:

cold

laps

Which

metal

does

NOT

shrink

during

casting

process?

(

)

参考答案:

gray

iron

(

)

is

an

incomplete

casting.（以下哪项属于铸件不完整缺陷）

参考答案:

misrun

Defect

of

cavities

in

casting

is

caused

by:

(

)

参考答案:

metal

shrinkage

Centrifugal

casting

is

suitable

to

produce

(

).

参考答案:

hollow

cylindrical

parts

Which

process

is

the

most

suitable

to

produce

this

brass

door

handle?

参考答案:

Casting

To

remain

a

constant

cutting

speed

turning,

spindle

speed

should

be

(

)atlargerworkpiece

diameter.

参考答案:

decreased

Compare

to

finishing,

roughing

has

(

).

参考答案:

larger

feed

and

larger

cutting

depth

What

is

“travel

distance”

in

terms

of

machining?

(

)

参考答案:

Distance

of

feed

motion.

Cutting

speed

of

drilling

is

the

linear

speed

at

position

(

).

参考答案:

①

Gear

teeth

can

be

produced

by

(

).

参考答案:

all

of

the

above

What

does

“tooling”

mean?

参考答案:

Preparing

tools

Grinding

wheels

are

(

)

cutting

tools.

参考答案:

abrsive

ACNCmachine

tool

can

use

different

tools

to

perform

turning,

milling,

and

drilling

continuously

is

called

(

)

参考答案:

turning

center

(

)

machine

tools

are

widly

applied

in

modern

flexible

manufacturing

system.

参考答案:

CNC

Whichofthefollowingprocessescanmakethebestsurfacesmoothness?

参考答案:

Honing

Internal

turning

cutters

are(

)cuttingtools.

参考答案:

single-point

Which

machining

process

is

the

most

suitable

to

produce

this

brass

pipe

elbow?

参考答案:

Turning

A

collet

chuck

is

used

to

hold

(

).

参考答案:

a

bar

stock

The

process

to

enlarge

diameter

of

an

exsiting

hole

is

known

as

(

).

参考答案:

core

drilling

(

)

is

the

cutting

tool

used

in

honing.

参考答案:

Abrasive

stone

To

operate

a

lathe,

you

should

NOT

wear

(

).

参考答案:

gloves

Knurling

process

is

to

make

a

(

)

参考答案:

pattern

“Lathe

dog”

is

used

to

(

).

参考答案:

drive

the

workpiece

What

kind

of

lathe

fixture

is

used

to

hold

a

thin

wall

hollow

workpiece?

(

)

参考答案:

mandrel

What

kind

of

lathe

fixture

is

used

to

produce

a

long

and

slender

workpiece?

(

)

参考答案:

steady

rest

Which

of

the

followingprocessesis

NOT

an

abrasive

machining

process?

参考答案:

Tapping

Which

machine

tool

is

suitable

to

make

a

series

of

different

holes?

参考答案:

CNC

drilling

center

A

milling

machine

that

can

use

different

tools

to

automatically

perform

a

variety

of

machining

processes

is

called

(

)

参考答案:

machining

center

Machine

tools

are

used

to

(

).

参考答案:

all

of

the

above

Grinding

wheel

dressing

is

to

(

).

参考答案:

recover

cutting

function

Reaming

processesareto

make

(

).

参考答案:

accurate

holes

The

core

idea

of

just-in-time

is

(

).

参考答案:

all

of

the

above

The

purpose

of

“5S

system”

is

to

(

).

参考答案:

all

of

the

above

Which

machine

tool

is

used

to

make

holes

in

large

workpieces?

参考答案:

radial

drilling

machine

Gun

drilling

processesareto

make

(

).

参考答案:

deep

holes

Tapping

processes

areto

make

(

).

参考答案:

threads

“Jidoka”

means

(

).

参考答案:

automaticstopping

The

key

way

in

the

hole

is

producede

by

(

).

参考答案:

slotting

Planing

process

is

applied

on

(

)

参考答案:

rough

surface

flating

Which

process

is

a

kind

of

reciprocating

machining?

参考答案:

Planing

Which

process

CANNOT

be

a

reciprocating

machining?

参考答案:

Reaming

Boring

processescanbedone

ona(

).

参考答案:

both

of

the

above

This

spline

hole

is

prodecude

by

(

).

参考答案:

broaching

Special

purpose

machine

tools

are

designed

to

(

).

参考答案:

produce

a

specific

part

in

mass

production

Cost

of

per

product

(

)

with

the

production

lot

size.

参考答案:

decreases

Metal

cutting

does

NOT

change

(

)

of

a

workpiece.

参考答案:

material

Production

line

is

applied

on

(

).

参考答案:

mass

manufacturing

“Jobbing”

means

producing

products

(

).

参考答案:

in

very

small

quantity

Lean

manufacturing

is

looking

for

(

).

参考答案:

minimum

waste

Which

fixture

isNOTused

in

milling

process?

参考答案:

Follower

rest

What

is

the

problem

in

the

feature?

参考答案:

Unnecessary

cutting

required

Face

milling

is

to