【判断题】【消耗次数：1】
鉴别1-氯丁烷，2-氯丁烷，2-甲基-2-氯丙烷可以直接用硝酸银的乙醇溶液！
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相关题目
【单选题】
某烯烃与H2加成后得到2,2－二甲基丁烷，该烯烃的名称是（ ）。
①
2,2－二甲基－3－丁烯
②
2,2－二甲基－1－丁烯
③
3,3－二甲基－1－丁烯
④
2,2－二甲基－2－丁烯
【单选题】
某烯烃与氢气加成后得到2，2-二甲基丁烷，该烃的名称是
①
3，3，3-三甲基-1-丁炔
②
2，2-二甲基-2-丁烯
③
2，2-二甲基-1-丁烯
④
3，3-二甲基-1-丁烯
随机题目
【单选题】
At that time, the committee, so far as I know, _______ of three scientists, two professors, and four senior engineers.
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composed
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comprised
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consisted
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made up
【单选题】
-- How long ______ you ______ the library book?-- For three days.
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have; borrowed
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have; kept
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borrow
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were; kept
【单选题】
I ____ up early this morning, so I stayed in bed until 8 o’clock a.m. .
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needn’t have got
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didn’t need to get
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shouldn’t have got
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can’t have got
【单选题】
Only in this way ____ out of the plan.
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you can talk him
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him can you talk
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him you can talk
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can you talk him
【单选题】
People at the party worried about him, because no one was aware ______ he had gone.
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of where
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of the place where
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where
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the place
【单选题】
If you drink too much, your health will get even ____.
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bad
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poor
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worse
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not well
【单选题】
I haven’t seen her for years, but I could still ____ her voice on the phone.
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recognize
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realize
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hear
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know
【单选题】
As I knew him better, I discovered that my____ had been right.
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enjoyment
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improvement
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impression
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environment
【单选题】
His explanation is not at all clear. I find it ____.
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essential
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confusing
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awful
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puzzled