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【单选题】
在冷却液充足的条件下,造成发动机过热的原因可能是( )。
A.
冷却水套内水垢过多
B.
机油泵损坏
C.
点火控制器损坏
D.
起动机损坏
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参考答案:
举一反三
【单选题】What did the woman tell the man about the postage?
A.
It needs more stamps.
B.
It is too big to send by mail.
C.
He should return it to the sender.
D.
He should take it to the post office.
【单选题】排球运动起源于1895年,由 人发明
A.
美国
B.
中国
C.
英国
D.
巴西
【判断题】网络中间商和传统中间商的作用是一致的。
A.
正确
B.
错误
【单选题】What did the woman do?
A.
She arranged to meet her friend later.
B.
She fixed her friend’s tape recorder.
C.
She tried to telephone her friend.
D.
She went to her friend’s house.
【单选题】What did the woman die of? _____did the woman die?
A.
How
B.
Where
C.
VVhat
D.
When
【判断题】( )由于空气几乎是不可压缩的,所以当载荷发生变化时,气动系统的动作稳定性好
A.
正确
B.
错误
【单选题】What did the woman do?
A.
She ordered some paper.
B.
She had the printer repaired.
C.
She chatted online with a friend.
D.
She filled in an application form.
【简答题】What did the woman believe?A. The man cannot sleep well because of his job. B. The man has no sympathy for Christmas tree. C. The trees are born to fulfill its Christmas purpose. D. People should give...
【单选题】、氯霉素作用显著的病原体为
A.
伤寒杆菌
B.
立克次体
C.
破伤风杆菌
D.
链球菌
E.
铜绿假单胞菌
【单选题】核酸溶液的紫外吸收特性来自:
A.
碱基
B.
戊糖
C.
磷酸二酯键
D.
核苷
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