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【單選題】
關于功率，下列說法中正確的是（ ）
A.
功率是描述做功快慢的物理量，在國際單位制中，其單位是焦耳（J）
B.
功率是描述做功多少的物理量，在國際單位制中，其單位是焦耳（J）
C.
功率是描述做功快慢的物理量，在國際單位制中，其單位是瓦特（W）
D.
功率是描述做功多少的物理量，在國際單位制中，其單位是瓦特（W）
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舉報參考答案：
舉一反三
【單選題】I’m surprised that he _____ in the exam.
A.
should fail
B.
would have failed
C.
may have failed
D.
should have failed
【單選題】The natural resources, such as mine, forest, and hydropower (水電) in that area have been ____.
A.
developed
B.
exploited
C.
improved
D.
expanded
【單選題】My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.
A.
couldn’ t have attended
B.
needn’t have attended
C.
mustn’t have attended
D.
shouldn’t have attended
相關題目：
【單選題】I’m surprised that he _____ in the exam.
A.
should fail
B.
would have failed
C.
may have failed
D.
should have failed
【單選題】The natural resources, such as mine, forest, and hydropower (水電) in that area have been ____.
A.
developed
B.
exploited
C.
improved
D.
expanded
【單選題】My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.
A.
couldn’ t have attended
B.
needn’t have attended
C.
mustn’t have attended
D.
shouldn’t have attended
參考解析：
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