Vents are led from the engine to ____ for the release of air from the cooling water.
A. the cooling jackets
B. the head tank
C. the cooling water pump
D. the scavenging box
查看答案
What is head tank in the closed cooling water system used for?
A. for the release of air from the cooling water
B. providing expansion room for heated cooling water
C. a place for implementing water and water treatment agent
D. any of the others
If a kind of liquid is used to cool the diesel engine, it is invariably called _____.
A. lubricant
B. coolant
C. combustion product
D. second refrigerant
以下不属于“美文”的散文集是（ ）
A. 周作人的《自己的园地》
B. 俞平伯的《燕知草》
C. 冰心的《笑》
D. 唐弢的《推背集》
以下不属于鲁迅后期杂文集的是（ ）
A. 《三闲集》
B. 《华盖集》
C. 《而已集》
D. 《准风月谈》
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