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【判断题】
衡量电能质量的指标有:电压、频率、电流A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】Nestle and some bottled water companies are trying to reduce the environmental impact by shifting to
【简答题】To meet the environmental challenges, some energy companies are experimenting with solar plants using __________
【单选题】Some advertisements，like the environmental protection advertisement ______ to our conscience or our desire to be worthy citizens.
A.
adapt
B.
attach
C.
appeal
D.
adjust
【简答题】简述页面的时间触发顺序。
【单选题】--- Some of the plastic bags can’t ______ after June1. --- Yes, people will use environmental bags instead.
A.
use
B.
be use
C.
be used
D.
are used
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