题目内容

According to the regulation, inspections to ensure that the systems are in good condition.

A.demanded
B.have demanded
C.be demanded
D. are demanded

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Before you think about asking for a promotion, make sure that either a position opening exists a new position is needed to be created.

A.and
B.nor
C.or
D. but

The traffic was making so much noise that I couldn’t hear what he .

A.is saying
B.was saying
C.has said
D. will say

一个触发器可以储存( )位二进制数。

A. 4
B. 3
C. 2
D. 1

n位二进制加法计数器有( )个状态,最大计数值是( )。

A. n, n
B. n, 2n
C. 2n, 2n
D. 2n, 2n-1

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