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【多选题】
钢瓶在使用不当时发生爆炸事故,往往造成人员伤亡,发生爆炸事故的主要原因有( )。A.
超出允许的充装量 。
B.
存放地点温度过暴晒。
C.
使用受损有缺陷的钢瓶
D.
钢瓶焊缝的质量不合格
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举一反三
【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]
【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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