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【简答题】
什么是气门间隙,发动机中为何要留气门间隙?
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参考答案:
举一反三
【单选题】How are you doing?
A.
I'm reading
B.
I'm going shopping
C.
Pretty fair.
D.
I'm going to school
【单选题】xt0502221紫外-可见分光光度计是根据被测量物质分子对紫外-可见波段范围的单色辐射的()来进行物质的定性的
A.
散射
B.
吸收
C.
反射
D.
受激辐射
【多选题】Which ones are appropriate to answer the question: How are you doing?
A.
I'm doing great today, and you?
B.
Doing well, thanks. How about you?
C.
Not bad, yourself?
D.
Thanks for asking. I'm doing fine.
【多选题】To reply “How are you doing?”
A.
I'm doing well.
B.
I'm great/ fine.
C.
Quite well.
D.
Amazing./ Fantanstic./ Fabulous.
E.
Attention.
【单选题】How are you doing?
A.
I'm listening to music.
B.
I'm fine. Thanks.
C.
I'm a student.
【单选题】How are you doing, Mike?
A.
Fine, thank you .
B.
I am talking to you now .
C.
I am not talking .
D.
I am not doing anything .
【单选题】下列石油馏分最适合用于生产高辛烷值重整汽油的原料是( )
A.
50~85℃
B.
60~145℃
C.
90~180℃
D.
170~210℃
【简答题】How do you answer to the greeting “How are you doing?” when you are feeling good?
【判断题】乳化剂是乳剂中的附加剂。( )
A.
正确
B.
错误
【单选题】一但维修塞被拆下,必需要等待 ( ) 分钟,使得变频器中的电容器进行放电,才可进行作业。
A.
5~10分钟
B.
30分钟
C.
60分钟
D.
1分钟
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