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【简答题】
萃取精馏塔在萃取剂加入口以上需设( )。
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举一反三
【单选题】The kids didn't start to fly kites in the playground _____ the rain stopped. [ ]
A.
if
B.
until
C.
whenever
【多选题】会议室屏幕摆放的基本原则有( )
A.
屏幕要摆放在正前方
B.
屏幕的大小与会议室的人数没有关系
C.
从屏幕低端到天花板的最小距离不得少于3.048米
D.
座位距离屏幕最近不少于屏幕宽度的1倍
E.
座位距离屏幕最远不能超过屏幕宽度的6倍
【简答题】The first day our professor challenged us to get to know someone we didn’t know. I looked around when a gentle hand touched my shoulder. I turned around to find a wrinkled, little old lady smiling at ...
【单选题】_____ I entered, he was _____ in his book and didn’t notice me.
A.
When; devoted
B.
While; absorbed
C.
When, absorbed
D.
While, devoted
【简答题】根据指纹的纹理走向及三叉点的数目的特点,可以将指纹分为三种类型: 、 和 。
【单选题】Her mother didn’t tell her _______ then.
A.
where is the MH370 flight
B.
where the MH370 flight is
C.
where was the MH370 flight
D.
where the MH370 flight was
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