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【单选题】
点火提前角应该随着发动机的工况的变化而改变,甲认为,点火提前角应随着发动机的转速的提高而减小,乙认为,点火提前角应随着发动机的负荷增大而增大。你认为( )。A.
甲正确
B.
乙正确
C.
甲乙都对
D.
甲乙都不对
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【简答题】产生死锁的必要条件是 , , , 。
【简答题】阅读理解。 A car needs gas to run and your body also needs food to work for you. Eating the right kind of food is very important. It can keep your body strong, so take care of what you eat. There are four ...
【简答题】阅读理解 A car needs gas to run and your body also needs food to work for you. Eating the right kind of food is very important. It can help your body grow strong, so take care of what you eat. There are f...
【单选题】The body also needs daily doses of sunlight to help ______ Vitamin D, crucial for maintaining body functions and for the health of muscles and bones.
A.
incorporate
B.
synthesize
C.
integrate
D.
assimilate
【单选题】China also needs to develop other types of energy resources and ( ) its sources of oil imports.中国也需要开发多种类型的能源并且使进口石油的来源多样化。
A.
drive
B.
diversal
C.
diverse
D.
diversify
【简答题】阅读理解。 A car needs gas to run and your body also needs food to work for you. Eating the right kind of food is very important. It can help your body grow strong, so take care of what you eat. There are ...
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