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【多选题】
润滑油的作用有哪些A.
清净作用
B.
减少磨损
C.
润滑作用
D.
冷却作用
E.
防锈作用
F.
密封作用
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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举一反三
【简答题】用所给动词的适当形式填空。 1. How lovely it is! What about (climb) a hill today? 2. Jim is a top student, and he is good at (speak) English. 3. I think (camp) can make us happier than skiing. 4. Mr Wu is very kind...
【简答题】读句子，根据汉语提示补全单词。 1. We should pay more ______( 注意) to our living environment. 2. Students are taught to help and ______ (尊重) each other in schools. 3. The local ______ (政府) has taken actions to call on...
【简答题】比较两种神经纤维传导的特点。
【单选题】What is the most important part of teaching complaining?
A.
Creating a situation where students can complain.
B.
Providing model complaints for students to follow.
C.
Analyzing the languages and structures for complaints.
D.
Giving students practice on how to complain by role play.
【简答题】附点二分音符唱几拍
【单选题】面对资源约束紧、环境污染严重、生态系统退化的趋势，必须树立（）的生态文明理念
A.
尊重自然、顺应自然、保护自然
B.
尊重自然、顺应自然、改造自然
C.
尊重自然、保护自然、改造自然
D.
顺应自然、保护自然、改造自然
【简答题】下图是神经元的结构模式图，请据图回答问题。 （1）写出图中各部分结构的名称。 ①__________，③__________，④__________。 （2）神经元的基本结构包括【2】___________ 和【3】 两部分。神经元与其他种类的细胞相比较，在结构上的显著特点是具有__________。 （3）神经元的功能是_______________________________。 （4）神经...
【单选题】The phrase 'students on the margins' in Paragraph 2 most probably refers to ______.
A.
students who actually regard higher education as an investment
B.
students who can't afford the money to go to college or university
C.
students who can't go to college because they have failed in the college entrance examination
D.
students who don't know whether higher education can have great influence on their earnings
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