导致制动器打不开的原因之一是主弹簧调的过紧。

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问题:

导致制动器打不开的原因之一是主弹簧调的过紧。

考点:起重机操作证考试起重机司机考试起重机司机考试题库
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Read and number. (排序)

(1) (    ) How many kites can you see?  

     (    ) Look at my new kite.

     (    ) I can see 16.

     (    ) How nice !

(2) (    ) He's my brother.

     (    ) No , he's a teacher.

     (    ) Who's that boy?

     (    ) Is he a student?

题型:判断题

若二次函数y=ax2的图象经过点P(-2,4),则该图象必经过点(  )

A.(2,4)

B.(-2,-4)

C.(-4,2)

D.(4,-2)

题型:判断题

根据所给提示完成句子(每空一词)

小题1:Sally often makes_________( 错误 )in grammar when learning English.

小题2:Did your mother write the book________ (她自己)?

小题3:Mr Smith _________(教) us science last term.

小题4:L_________ to English tapes is a great way to improve your English.

小题5:The girl was t_________ of the dream she made. And she can’t go to sleep till the morning.

小题6:Excuse me, sir! You are not a_________ to smoke here.

小题7:His pet dog’s _________(die) made him very sad.

小题8:After lunch, I always feel very _______(sleep).

小题9:My parents have always taught me the ____________(important) of working hard.

题型:判断题

涉外协议管辖

题型:判断题

对于某一化学反应,下列各项反应条件改变,能使反应历程改变,降低化学反应的活化能,从而提高反应速率的是                           ( )

A.增大反应物浓度

B.加压

C.加催化剂

D.升温

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