正确答案: C

A或B

题目：总曲折是（）。

查看原题 查看所有试题

学习资料的答案和解析：

[单选题]下述关于机舱饱和度ks和kv的说明，哪一项是错误的（）。

ks和kv小时，机舱的通风、散热差，管理维修不方便

[单选题]吊缸主机检修时，应当（），以防止伤人和损坏机件。

合上盘车机并在主机操纵部位悬挂警告牌

[单选题]Which of the following is a factor of fuel oil almost having nothing to do with the formation of combustion products?（）

setting point

[单选题]Fins are installed on the generating tube surfaces in waste heat boilers to （）.

increase the rate of heat transfer

[单选题]The amount of fuel injected in a particular time, or degree, of crankshaft rotation is termed （）.

rate of injection

[单选题]How would the exhaust of a properly operating diesel engine appear?（）.

Perfectly clear