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【单选题】
When a zener diode is in reverse biase mode, and reaches the reverse zener voltage Uz, the voltage keep ______ with in a _______current range.A.
stable, wide
B.
stable, narrow
C.
varied, wide
D.
varied, narrow
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【单选题】There is no use cheating me. You ______ tell me the truth.
A.
may as well
B.
may well
C.
may better
D.
may as well as
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【简答题】vt. 营救 , 援救
【简答题】You may make use of the questions in the book to eliminate candidates who are not serious·
【简答题】援救,营救
【单选题】. It’s not important __________ you may call it. What is important is __________ you make good use of it.
A.
what; when
B.
that; how
C.
what; how
D.
how; what
【多选题】What are the good ways to use in the conclusion to end an essay?
A.
You may reinforce the thesis statement by paraphrasing it.
B.
You may make an appeal to the reader to take an action to solve the problem discussed in the essay.
C.
You may mention a new topic by the end of the conclusion.
D.
You may quote from an expert on the issue examined in the essay.
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