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【单选题】
So well ________ in 2011 that the world has agreed that it was the year of China. [ ]A.
did China perform
B.
China has performed
C.
was China performed
D.
China is performing
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举一反三
【单选题】机油细滤器上设置低压限制阀的作用是( )
A.
机油泵出油压力低于一定值时,关闭通往细滤器油道
B.
使进入机油细滤器的机油保证较高压力
C.
使进入机油细滤器的机油保持较低压力
【简答题】When will Charlie have to hand in his paper?
【单选题】How long did the author turn in his paper?
A.
3 days later
B.
5 days later
C.
A week later
D.
A month later
【单选题】在机油细滤器上设置低压限制阀的作用是
A.
机油泵出油压力高于一定值时，关闭通往细滤器的油道
B.
机油泵出油压力低于一定值时，关闭通往细滤器的油道
C.
使进入机油油滤器的机油保证较高压力
D.
使进入机油油滤器的机油保证较低压力
【单选题】机油细滤器上设置低压限制阀的作用是:
A.
机油泵出油压力高于一定值时,关闭通往细滤器油道
B.
机油泵出油压力低于一定值时,关闭通往细滤器油道
C.
使进入机油细滤器的机油保持较高压力
D.
使进入机油细滤器的机油保持较低压力
【简答题】何谓旋转运动?能作旋转运动的关节有哪些?
【简答题】宿根花卉常采用[填空(1)]、[填空(2)]、[填空(3)]等法进行繁殖。
【单选题】下列4项中,可以为网络主机设置的合法IP地址是()
A.
190.220.5
B.
206.53.4.0
C.
206.53.312.78
D.
207.43.62.220
【单选题】Which of the following is true according to the text?
A.
In his paper, Dr. Arien proves that HIV is weakening in Europe and Africa.
B.
Two kinds of blood samples are placed in two different cell cultures to be observed.
C.
Dr. Arien has made the cause of attenuation of virus clear.
D.
There are 3/4 of the viruses in Dr. Arien's study proving to be less harmful.
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