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【单选题】
下列COUNT函数的用法错误的是( )。A.
COUNT(ALL)
B.
COUNT(*)
C.
COUNT(成绩)
D.
COUNT(DISTINCT 学号)
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【单选题】目前我国制定的( )《综合布线系统工程验收规范》为国家标准,自 2007 年 10 月 1 日起实施。
A.
GB 50311-2007
B.
GB 50311-2008
C.
GB 50312-2007
D.
GB 50312-2008
【单选题】An instrument designed to maintain a continuous record of atmospheric pressure is a(n)______
A.
mercurial barometer
B.
aneroid barometer
C.
barograph
D.
thermograph
【单选题】It occurred to me______ if I had continued to maintain eye contact, I would have been rude and aggressive.
A.
that
B.
/
C.
as
D.
which
【单选题】b a ck A. h a ve B. pl a ne C. g a me D. n a me
A.
h a ve
B.
pl a ne
C.
g a me
D.
n a me
【单选题】Tibet is facing a(n)____task to maintain stability and all government workers must be on their highest guard.
A.
concerned
B.
subtle
C.
ridiculous
D.
urgent
【简答题】A. n a me B. t a ke C. g a me D. b a g
【简答题】maintain [meɪn'teɪn]
【简答题】maintain [meɪn'teɪn]
【单选题】'Me, afraid of him?' he said with a(n) ______ smile, 'Not me!'
A.
contemptible
B.
amusing
C.
contagious
D.
contemptuous
【简答题】设mE＜∞。则f(x)在E上可积的充要条件是级数 ∑ n=1 ∞ mE(|f|≥n) 收敛。当mE=∞时，结论是否成立?
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