题目内容

CP是哪个命令的热键名____()

A. CIRLCE
B. COPY
CHAMFER
D. SPLINEDIT

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“C”是()命令的命令别名

A. COPY
B. CHAMFER
C. SCALE
D. CIRCLE

The country depends heavily on its tourist trade()

A. bases
B. decides
C. lives
D. relies

积分控制作用在最后达到稳定时,偏差是等于()的,这是它的一个显著特点,也是它的一个最主要的优点

A. 0
B. -∞
C. ∞
D. 1

Because they don’t understand English, they communicate entirely by body language when traveling()

A. nearly
B. only
C. completely
D. rarely

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