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【多选题】
Which of the following numbers are pronunced differently in radio communication from those in daily English?A.
3
B.
4
C.
5
D.
9
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反馈参考答案：
举一反三
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【单选题】关于恒力的功，下述说法正确的是：
A.
力越大，位移越大，做功就越多
B.
功的大小是由力的大小和位移的大小来确定的
C.
若力的方向与物体的运动方向相同，功就等于力的大小和位移大小的乘积
D.
力与位移的夹角越大，这个力所做的功越大
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