【单选题】【消耗次数：1】
数控机床上进行轨迹加工的各种工件，大部分由直线和圆弧构成，因此大多数数控装置具有直线和圆弧的插补功能。该说法（ ）
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
某数控系统采用数据采样插补算法。若加工圆弧，以下那种情况插补误差最大。（）
①
F＝150(mm/min)R=70mm
②
F=240(mm/mim)R=70mm
③
F＝150(mm/min)R=100mm
④
F=240(mm/mim)R=100mm
【单选题】
数控机床上使用的检测装置应满足以下要求（ ）
①
工作可靠，抗干扰性强
②
使用维护方便，适应机床的工作环境
③
满足精度、速度和机床工作行程的要求
④
成本低
⑤
以上选项都选
随机题目
【单选题】
The atmosphere _______ certain gases mixed together in definite proportions.
①
composes of
②
is made up
③
consists of
④
makes up of
【单选题】
Do you mind my smoking here?___________
①
No, thanks.
②
Yes, I do.
③
Yes, I’d rather not.
④
Good idea.
【单选题】
Every time when I go back to my hometown, I usually spend two days ____ of my relatives.
①
going the rounds of
②
rounding up
③
making the rounds of
④
rounding on
【单选题】
he children （） many times not to play with fire.
①
told
②
have told
③
have been told
④
are being told
【单选题】
_______ girl dressed _______ black is her sister Rose．
①
A; in
②
A; on
③
The; on
④
The; in
【单选题】
Spitting on the ground is not only ______ but also harmful to others’ health.
①
blasting
②
banging
③
grabbing
④
disgusting
【单选题】
It was on the beach ______ Miss White found the kid lying dead.
①
that
②
this
③
it
④
which
【单选题】
The old houses are being pulled down to _______ a new office block.
①
make room for
②
make use of
③
take the place of
④
supply with
【单选题】
It is generally considered unwise to give a child ______ he or she wants.
①
however
②
whatever
③
whichever
④
whenever
【单选题】
Those who have applied for the post（）in the office.
①
are being interviewed
②
are interviewing
③
interviewing
④
to be interviewing