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【多选题】
电起动系主要由蓄电池、起动开关、低温起动预热装置及（）等组成。A.
起动机
B.
起动继电器
C.
发电机
D.
点火线圈
手机使用
分享
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新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Which of the following is a beneficial activity of microorganisms?
A.
Some microorganisms are used as food for humans.
B.
Some microorganisms use carbon dioxide.
C.
Some microorganisms provide nitrogen for plant growth.
D.
d.Some microorganisms are used in sewage treatment processes.
E.
all of the above
【单选题】—Do you think I could borrow your dictionary? —______.
A.
Yes, you may borrow
B.
Yes, you could
C.
Yes, help yourself
D.
Yes, go on
【简答题】An is a substance produced by microorganisms that inhibits or kills other microorganisms
【单选题】— Alice told me you called yesterday. — Yes, I had a problem with Jane, ___________I thought you could help me with, but you were not in.
A.
who
B.
whom
C.
that
D.
which
【单选题】Which of the following is a beneficial activity of microorganisms?
A.
Some microorganisms are used as food for humans.
B.
Some microorganisms use carbon dioxide.
C.
Some microorganisms provide nitrogen for plant growth.
D.
Some microorganisms are used in sewage treatment processes.
E.
all of the above
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