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【单选题】
反应器的容积效率η小于1.0时,且随着 的增大而减小,此时该反应的反应级数nA.
<0
B.
=0
C.
≥0
D.
>0
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举一反三
【多选题】关于语速的表述. PaceThis is how quickly or slowly you are speaking. Consider: • If you speak too quickly, your audience will become exhausted listening to you. • If you speak too slowly, your audience will l...
A.
Vary your pace for effect throughout your speech. Be aware of how fast you are speaking. 在整个演讲过程中改变你的语速以达到效果。注意你说得有多快。
B.
Pause after a key idea or statement to give your audience time to think about what you have just said. 在一个关键的观点或陈述之后暂停，让你的听众有时间思考你刚刚说了什么。
C.
Pause after a question so that your audience can contemplate a response. 提问后停顿一下，以便听众能够思考如何回答。
【简答题】If you are exhausted _______ travel and trying to adjust to a new time zone, you may not be ready to face the new challenging environment yet.
【单选题】— Why did you leave without a word of warning to John? — But what _____ otherwise? He never likes to listen to me. [ ]
A.
could I do
B.
could I have done
C.
must I have done
D.
should I do
【简答题】if you are exhausted, it will 5) you up.
【简答题】阅读下列说明，回答问题1至问题5，将解答填入答题纸的对应栏内。 【说明】 某高校拟对学生公寓网络（已知网络主机超过3000台）进行改造，该校网络部门在技术方案讨论的过程中，提出了以太网接入、ADSL接入和PON接入三种思路。该部门技术主管在对三种方案的建设成本、网络安全、系统容易维护、宽带综合业务等方面综合考虑后决定采用GPON接入方式，并给出了基于GPON技术的学生公寓宽带初步设计方案，如图1-...
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