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【单选题】

《维规》规定便携电台的音频输出功率≥()W.

A.
0.5
B.
1
C.
1.5
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参考答案:
参考解析:
.
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【单选题】[音频] question 12: What is the best thing about iPads according to the couple?

A.
They ma k e f or exce 11 ent entertamment.
B.
They are useful for the annual family vacat10n.
C.
They keep children at different age levels occupied.
D.
The y are helpful when going to the grocery store.

【单选题】泵的输出功率是指:().

A.
原动机传给泵的功率
B.
单位时间内传给液体的能量
C.
轴功率
D.
单位重量的液体所增加的能量