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【单选题】
在Sn2+、Fe3+的混合溶液中,欲使Sn2+氧化为Sn4+而Fe2+不被氧化,应选择的氧化剂是()。φθSn4+/Sn2+=0.15V,φθFe3+/Fe2+=0.77V。
A.
KIO3(φθ2IO3/I2=1.20V)
B.
H2O2(φθH2O2/2OH-=0.88V)
C.
HgCl2(φθHgCl2/Hg2Cl2=0.63V)
D.
SO2-3(φθSO3/S=-0.66V)
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举一反三
【单选题】对“爱而不见”一句,理解正确的一项是
A.
句中的“而”是转折连词，可译为“却”。
B.
这句诗可译为：“静女”为了表达对男的爱意，故意隐藏起来。
C.
静女之所以不出现，是因为男子来迟了，心中不高兴。
D.
刻画了“静女”的活泼、机灵和浪漫的形象。
查看完整题目与答案
【单选题】对“爱而不见”一句,理解正确的一项是()
A.
句中的“而”是转折连词，可译为“却”。
B.
这句 诗可 译 为：“静女为了表达对男子的爱意，故意隐藏起来。
C.
静 女之所以 不 出现，是因为男子来迟了，心中 不 高兴。
D.
刻画了“静女”的活泼、机灵和浪漫的形象。
查看完整题目与答案
【单选题】I have always been honest and straight forward, and it doesn’t matter ____that I’m talking to.
A.
who is it
B.
who it is
C.
it is who
D.
it is whom
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【单选题】—I am afraid I am a man without luck. I have been tryin g and have always been turned away. —________. Just have a little patience. [     ]
A.
Things at the worst will mend
B.
Time and tide wait for no man
C.
Fear always springs from ignorance
D.
Troubles never come singly
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【单选题】Goods in transit are included in a purchaser's inventory:
A.
At any time during transit.
B.
When the purchaser is responsible for paying freight charges.
C.
When the supplier is responsible for freight charges.
D.
If the goods are shipped FOB destination.
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【单选题】I have always been honest and straightforward, and it doesn’t matter ______ I’m talking to.
A.
who is it that
B.
who it is that
C.
it is who that
D.
it is whom that
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【单选题】I have always been honest and straightforward, and it doesn't matter ________ I'm talking to. [     ]
A.
who is it
B.
who it is
C.
it is who
D.
it is whom
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【判断题】在调整抱闸时,严禁松开抱闸弹簧(制动器主弹簧);如果必须松闸时,一定要有措施防止溜车。
A.
正确
B.
错误
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【单选题】对“爱而不见”一句,理解正确的一项是( )
A.
句中的“而”是转折连词，可译为“却”。
B.
这句诗可译为:“静女”为了表达对男的爱意，故意隐藏起来。
C.
静女之所以不出来，是因为男子来迟了，不高兴。
D.
刻画了静女的活泼、机灵和浪漫的形象。
查看完整题目与答案
【单选题】I have always been honest and straightforward , and it doesn't matter_______I'm talking to.
A.
Who is it
B.
who it is
C.
it is who
D.
it is whom
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【单选题】对“爱而不见”一句,理解正确的一项是
A.
句中的“而”是转折连词，可译为“却”。
B.
这句诗可译为：“静女”为了表达对男的爱意，故意隐藏起来。
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句中的“而”是转折连词，可译为“却”。
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刻画了“静女”的活泼、机灵和浪漫的形象。
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A.
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A.
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D.
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查看完整题目与答案
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A.
who is it
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【判断题】在调整抱闸时,严禁松开抱闸弹簧(制动器主弹簧);如果必须松闸时,一定要有措施防止溜车。
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【单选题】对“爱而不见”一句,理解正确的一项是( )
A.
句中的“而”是转折连词，可译为“却”。
B.
这句诗可译为:“静女”为了表达对男的爱意，故意隐藏起来。
C.
静女之所以不出来，是因为男子来迟了，不高兴。
D.
刻画了静女的活泼、机灵和浪漫的形象。
查看完整题目与答案
【单选题】I have always been honest and straightforward , and it doesn't matter_______I'm talking to.
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