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