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【单选题】
起落架选择活门的位置是由_控制的（）A.
转换活门
B.
旁通活门
C.
油门手柄
D.
收放手柄
手机使用
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举一反三
【单选题】— I’m happy to meet so many Chinese here! __Yes._______ of the students in this school are from China.
A.
One third
B.
First three
C.
One three
D.
First third
【单选题】"I’m a reliable person. I meet all deadlines. I’m easy to cooperate with and happy to work with any team." is probably Mary’s answer to question about her _________.
A.
experience
B.
strengths
C.
motivation
D.
interest
【单选题】重量为100 N的木箱放在水平地板上,至少要用35 N的水平推力,才能使它从原地开始运动。木箱从原地移动以后,用30 N的水平推力,就可以使木箱继续做匀速运动,由此可知:木箱所受的滑动摩擦力F=( )N。
A.
35
B.
30
C.
100
D.
20
【简答题】--- I’m happy to meet so many Chinese here!--- Yes. __________ of the students in this school are from Chinese.A. A. One third
【单选题】重量为100 N的木箱放在水平地板上,至少要用35 N的水平推力,才能使它从原地开始运动。木箱从原地移动以后,用30 N的水平推力,就可以使木箱继续做匀速运动,由此可知:木箱与地板间的最大静摩擦力F max =( )N
A.
30
B.
35
C.
100
D.
70
【简答题】要求:Complete the conversation by putting the verbs in the brackets into the correct form of the present continuous tense. P: So, how long before we get there? A: About two hours, Mr. President. The Bri...
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