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【单选题】
— Look! There ________! — Oh;yes,there __________ ! [     ]
A.
comes Tom;comes he
B.
Tom comes;he comes
C.
Tom comes;comes he
D.
comes Tom; he comes
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【多选题】有一交流电 ,加在电感L为100mH的电感线圈两端,下面叙述正确的是
A.
流过电感的电流的初相位是零度。
B.
流过电感的电流最大值是12.1A
C.
感抗XL是31.4Ω。
D.
流过电感的电流瞬时值表达式为
【判断题】要泡好一杯茶,需要掌握的茶艺六要素有:选茶、择水、备器、雅室、冲泡、品尝。
A.
正确
B.
错误
【简答题】线性电感元件是指电感量L为______的电感。
【单选题】加在感抗 X L =10 Ω 纯电感两端的电压 u L = 20sin ( ωt+π/6 ) V ,则通过它的电流是( )。
A.
i L =2sin ( ωt+π/3 ) A ;
B.
i L =2 sin ( ωt-π/3 ) A ;
C.
i L = 2sin ( ωt+π/6 ) A ;
D.
i L = 2sin ( ωt-π/6 ) A ;
【单选题】Read the text of UNIT 2 Neat People vs. Sloppy People, what's the writer's purpose of writing this passage?
A.
Compare the differences between neat people and sloppy people
B.
Discuss the causes of difference between neat people and sloppy people
C.
To disprove the conventional attitudes toward neat people and sloppy people
D.
Criticize neat people for their insensitivity.
【简答题】两电感元件L 1 和L 2 并联,求其等值电感;若将L 1 和L 2 串联,再求其等值电感。
【单选题】Which of the following is the author's attitude towards a sloppy and indulgent culture?
A.
He is in favor of it.
B.
His view is balanced.
C.
He is slightly critical of it.
D.
He is strongly critical of it.
【单选题】sloppy
A.
careless
B.
sleepy
C.
slightly
D.
careful
【单选题】A 'Sloppy Joe' combines cheese and hamburger meat together.
A.
Y
B.
N
C.
NG
【单选题】According to the passage, sloppy writing ______.
A.
parallels a social tendency of being informal
B.
worries students as well as professors
C.
is taken as trivial by employers
D.
is ignored in all business concerned sciences
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