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【多选题】
双向晶闸管的触发方式有多种,实际应用中经常采用的触发方式组合有()。
A.
I+ Ⅲ-
B.
I+ Ⅲ+
C.
I- Ⅲ-
D.
I- Ⅲ+
E.
I+ Ⅱ-
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皮皮学刷刷变学霸
举一反三
【单选题】Which of the following is true according to the passage?
A.
Man's energy cycle can be changed easily.
B.
Some family quarrels are caused by unawareness of energy cycle.
C.
Getting up early in the morning is not easy.
D.
Everyone has a daily energy cycle but a lazy one.
【判断题】气门头部的作用主要是密封进排气道的作用。
A.
正确
B.
错误
【判断题】湿法制粒的方法包括挤压制粒、高速搅拌制粒和转动制粒
A.
正确
B.
错误
【简答题】进气道的作用?什么是进气道总压恢复系数?
【多选题】The standard free-energy change (△G'°) tells us in which direction and how far a given reaction must go to reach equilibrium when ______________________________.
A.
the initial concentration of each component is 1.0 M
B.
the pH is 7.0
C.
the temperature is 25 °C
D.
the pressure is 101.3 kPa (1 atm).
【判断题】提高劳动生产率可以通过增加工人人数和设备数量来实现。(    )
A.
正确
B.
错误
【多选题】湿法制粒的方法一般包括( )
A.
挤压制粒
B.
转动制粒
C.
流化制粒
D.
喷雾干燥制粒
【简答题】评价进气道性能的指标是什么?进气道的设计准则是什么?旋流进气道与滚流进气道所起的作用有何差异?
【判断题】气门的主要作用是控制进、排气道的开闭密封气缸 ( )
A.
正确
B.
错误
【单选题】Flow of water through the pipe nevertheless remains unidirectional to the overall change in height, which to the overall change in free energy in a pathway.
A.
contribute/responds
B.
contribute/corresponds
C.
due/corresponds
D.
due/responds
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