题目内容

________ quantities of water are being used nowadays with the rapid development of industry and agriculture.

A. Excessive
B. Extensive
C. Effusive
D. Exclusive

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________ recent developments we do not think your scheme is practical.

A. In view of
B. In favor of
C. In case of
D. In honor of

When you buy the spare parts for your car, try to get the _______ ones from the authorized dealer.

A. genuine
B. true
C. raw
D. veritable

PN结正偏导通,反偏截止,称为PN结的性能。

PN结正向偏置时,PN结的内电场被。

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