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【判断题】
使用二极管时,应考虑的主要参数是最大整流电流和最高反向工作电压A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Critics of the Wright brothers thought that the idea of a flying machine was totally
A.
absorbing
B.
exciting
C.
absurd
D.
immoral
【单选题】有关维生素PP的叙述，错误的是
A.
维生素PP包括尼克酰胺和尼克酸
B.
NAD+和NADP+是维生素PP的活性形式
C.
NAD+和NADP+是不需氧脱氢酶的辅酶
D.
NAD+在生物氧化中传递电子
E.
维生素PP缺乏时发生癞皮病
【单选题】—What about flying a kite this afternoon? —_____.
A.
Good idea
B.
Thank you
C.
Don't worry
D.
Enjoy yourself
【单选题】有关维生素PP的叙述，错误的是
A.
维生素PP包括尼克酰胺和尼克酸
B.
NAD+和NADP+是维生素PP的活性形式
C.
NAD+和NAD+是不需氧脱氢酶的辅酶
D.
NAD+在生物氧化中传递电子
E.
维生素PP缺乏时发生癞皮病
【单选题】He the idea of flying to Beijing because it was too expensive. [ ]
A.
gave away
B.
gave out
C.
gave in
D.
gave up
【单选题】— What about flying to New Zealand for the holiday? — _______. [ ]
A.
Good idea
B.
Help yourself
C.
go ahead, please
D.
Me, too
【单选题】Critics of the Wright brothers thought that the idea of a flying machine was totally preposterous.
A.
attractive
B.
boring
C.
absurd
D.
immoral
【单选题】The idea of flying an aircraft was _____ to some people.
A.
boring
B.
distasteful
C.
exciting
D.
needless
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