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搜题
【单选题】
引起放大电路静态工作不稳定的主要因素是A.
晶体管的电流放大系数太大
B.
电源电压太高
C.
晶体管参数随环境温度的变化而变化
D.
晶体管质量太差
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举一反三
【单选题】We learn from the first paragraph that the author regards the inadequacies of the lorry as______.
A.
inevitable and amusing
B.
dangerous and frightening
C.
novel and unexpected
D.
welcome and interesting
【单选题】What can we learn from the dialogue?
A.
Megan doesn't like the novel.
B.
Rob has read the novel.
C.
Megan has seen the movie.
D.
Rob wants to see the movie.
【简答题】图示桁架零杆个数为( )根。【图片】
【单选题】Third, to determine the real source from the suspects, we employ a novel microscopic rumor spreading __________ to calculate the maximum likelihood (ML) for each suspect.
A.
) way
B.
) road
C.
) line
D.
) model
【单选题】The prime suspect 新冠状病毒的爆发真是蝙蝠的错? As the novel coronavirus ( 冠状病毒) spreads throughout China and the rest of the world, an important question has yet to be answered: where did the virus come from? The ...
A.
Bats have been discovered to be its original cause.
B.
Pangolins are now considered the most likely source.
C.
It’s identified by comparing sources of various viruses.
D.
The virus was found to be genetically similar to those seen in bats.
【多选题】What can we do to protect us from the Novel Coronavirus–Infected Pneumonia?
A.
Stay at home
B.
Wash hands frequently
C.
Go window-shopping
D.
Wear masks in the public
E.
Have a party
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