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【简答题】
预塔精馏的作用是:(),加压塔、精馏塔的作用:除去甲醇中的重组分。
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参考答案:
举一反三
【简答题】钻孔灌注桩泥浆的作用是什么?共有哪几个指标?
【单选题】You seem to be dissatisfied with your present post. I don’t think you judged your ability objectively when you applied for it,____ you?
A.
do
B.
don’t
C.
didn’t
D.
did
【单选题】三相异步电动机正反转控制电路在实际工作中最常用最可靠的是
A.
倒顺开关
B.
接触器联锁
C.
按钮联锁
D.
按钮与接触器双重联锁
【多选题】钻孔灌注桩泥浆的作用是( )。
A.
护壁
B.
浮悬钻渣
C.
保持孔内水头
D.
保证钻进速度
【单选题】I think it is a little _______ to get married in a church when you don’t believe in God.
A.
difficult
B.
hypocritical
C.
unattached
D.
solemn
【单选题】I don’t think you judged your ability objectively when you applied for it, ______ you?
A.
do
B.
did
C.
don't
D.
didn't
【单选题】I think it's a little to get married in a church when you don’t believe in God.
A.
difficult
B.
hypocritical
C.
unattached
D.
solemn
【单选题】I型超敏反应中能释放生物活性物质的细胞主要是
A.
巨噬细胞
B.
NK    细胞
C.
T淋巴细胞
D.
B淋巴细胞
E.
肥大细胞和嗜碱性粒细胞
【单选题】I think it’s a little ___ to get married in a church when you don’t believe in God. A. B. C. D.
A.
difficult
B.
hypocritical
C.
unattached
D.
solemn
【单选题】三相异步电动机正反转控制电路在实际工作中最常用最可靠的是( )。
A.
按钮联锁
B.
按钮与接触器双重联锁
C.
倒顺开关
D.
接触器联锁
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