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【判断题】
工业机器人的机械部分主要包括末端操作器、手腕、手臂和机座。A.
正确
B.
错误
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A.
The amount and quality of sleep.
B.
The amount of sleep.
C.
The quality of sleep.
D.
The place of sleep.
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【单选题】—Keep quiet, kids. Dad ______ in the next room. —OK, Mum. [ ]
A.
is sleeping
B.
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C.
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