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【多选题】
下列萃取方法属于液液萃取的是A.
有机溶剂萃取
B.
萃取
C.
反胶团萃取
D.
液膜萃取
E.
液固萃取
F.
超临界流体萃取
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反馈参考答案：
举一反三
【简答题】活塞裙部一般开“T”字槽,横向是 ____________ ,纵向是 ____________ 。
【单选题】Q uestions of fact are based on whether a particular topic is _________.
A.
true or not true
B.
right or wrong
C.
should or should not
【单选题】1978年党的十一届三中全会召开前夕，在中央工作会议上邓小平发表了《解放思想，实事求是，团结一致向前看》的讲话，明确指出：“一个党，一个国家，一个民族，如果一切从本本出发，思想僵化，迷信盛行，那它就不能前进，它的生机就停止了，就要（ ）。”
A.
丧失活力
B.
内外交困
C.
亡党亡国
D.
高度集权
【单选题】uestions 5 to 7 are based on the news report you have just heard .
A.
) It stayed in the air for about two hours .
B.
) It took off and landed on a football field .
C.
) It proved to be of high commercial value .
D.
) It made a series of sharp turns in the sky .
【多选题】As for organization, what are the q uestions you need to bear in your mind()
A.
Is the topic relevant to the audience?
B.
Is there a clear structure (beginning, middle, end)?
C.
Does the speaker use strong supporting material to present the speech's core idea?
D.
Does the speaker link the parts together?
E.
Does the speaker consider the timing?
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