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【判断题】
基本尺寸是设计时确定的尺寸，因而零件的实际尺寸越接近基本尺寸，其加工误差越小。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】加工圆弧时,若采用圆弧半径R编程,当圆弧( )时R用负值表示圆弧的半径。
A.
圆心角<180º< /div>
B.
圆心角≤180º
C.
圆心角>180 º
D.
圆心角≥180
【单选题】Since her blood pressure is (much) higher (than) (it should be), her doctor insists that she (will) not smoke.
A.
much
B.
than
C.
it should be
D.
will
【单选题】Since her blood pressure is (much) higher (than) (it should be), her doctor insists that she (will) not smoke.
A.
much
B.
than
C.
it should be
D.
will mot
【单选题】It’s obvious that her refusing to see a doctor has ______ her illness worsening.
A.
pulled into
B.
led in
C.
taken up
D.
resulted in
【单选题】编写圆弧插补程序时,若采用圆弧半径R编程时,当加工圆弧的圆心角( )时,用正R表示圆弧半径。
A.
大于或等于180°
B.
小于或等于180°
C.
小于180°
D.
大于180°
【单选题】After ______ seemed an endless wait, it was her turn to stop into the doctor's office.
A.
it
B.
that
C.
what
D.
which
相关题目：
【单选题】加工圆弧时,若采用圆弧半径R编程,当圆弧( )时R用负值表示圆弧的半径。
A.
圆心角<180º< /div>
B.
圆心角≤180º
C.
圆心角>180 º
D.
圆心角≥180