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【单选题】
活塞发动机汽缸头温度过高除易造成机件损坏外,还引起A.
燃油消耗量过大
B.
滑油消耗量过大
C.
电嘴积炭
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【简答题】阅读理解。 The Fourth '21th Century Cup' National English Speaking Competition is to be held in Shanghai. Organizers : China Daily and Shanghai Broadcasting Network. Co-ordinator : China University English...
【简答题】三相异步电动机的三相定子绕组通以 ,则会产生 。
【判断题】“21 Century Cup” English Speaking Competition is sponsored by 21st Century.
A.
正确
B.
错误
【简答题】The Fourth '21th Century Cup' National English Speaking Competition is to be held in Shanghai. Organizers: China Daily and Shanghai Broadcasting Network. Co-ordinater: China University English Speakin...
【单选题】在顺相序三相交流电源中,设 A 相电流为 i A =Imsinωt A ,则 i B 为( ) A 。
A.
Imsin(ωt -240°)
B.
Imsin ωt
C.
Imsin(ωt -120°)
D.
Imsin(ωt +120°)
【简答题】The Fourth “21st Century Cup” National English Speaking Competition is to be held in Shanghai. Organizers: China Daily and Shanghai Broadcasting Network. Co-ordinater: China University English Speakin...
【单选题】Which method will a speaker use for a prepared speech competition like that in the CCTV Cup and the 21 st Century Cup?
A.
Reading verbatim from a manuscript
B.
Reciting a memorized text
C.
Speaking impromptu
【单选题】“21 Century Cup” English Speaking Competition i s sponsored by 21 st Century.
A.
TRUE
B.
FALSE
【单选题】Which method will a speaker use for a prepared speech competition like that in the CCTV Cup and the 21st Century Cup?
A.
Reading verbatim from a manuscript
B.
Reciting a memorized text
C.
Speaking impromptu
D.
none of the above
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