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【判断题】
一对圆柱齿轮传动中，当齿面产生疲劳点蚀时，通常发生在.靠近齿根部。()A.
正确
B.
错误
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举一反三
【单选题】Which one of the following cohesive devices are NOT used in the sentences “Electricity is a convenient form of energy. It is well known that when fuels such as coal, oil and gas are burned, energy is...
A.
reference
B.
substitute
C.
conjunction
D.
ellipses
【多选题】我们的对外开放必须是全方位、多层次、宽领域的开放,这里的“全方位”开放是指( )。
A.
对城市和农村都要开放
B.
经济和政治领域都要开放
C.
对资本主义国家和社会主义国家都要开放
D.
对发达国家和发展中国家都实行开放
【简答题】Scientists have long believed one way to stop the Earth’s atmosphere from warming is by planting more trees. The idea is that more trees will take in or absorb some of the carbon dioxide in the atmosp...
【简答题】A gas released as a metabolic product of catabolism is .
【单选题】被称为“现代经济学之父”的亚当·斯密在他的《道德情操论》中说：“如果一个社会的经济发展成果不能真正分流到大众手中，那么它在道义上将是不得人心的，并且有风险的，因为它注定会威胁到社会的稳定。”上述观点启示我们，实现全体人民“共建、共享”的和谐社会必须处理好（）
A.
投资与消费的关系
B.
市场与宏观调控的关系
C.
效率与公平的关系
D.
个人与集体、国家的关系
【单选题】Scientists have long believed one way to stop the Earth' s atmosphere from warming is by planting more trees. The idea is that more trees will take in or absorb stone of the carbon dioxide in the atmo...
A.
Introduce some new ideas about the relationship between trees and carbon dioxide.
B.
Introduce recent condition of global industrial pollution.
C.
Call on people to plant more trees to reduce greenhouse gases.
D.
Point out that power companies should be responsible for the rising levels of carbon dioxide.
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