Which of the listed conditions can cause a diesel engine to use too much lube oil?（）
A. Dirty lube oil filter
B. Too much piston ring wear
C. High lube oil viscosity
D. Low lube oil temperature
查看答案
弥漫性间质性肺部疾病产生的肺功能损害都表现为限制性通气功能障碍和弥散功能下降。
A. 正确
B. 错误
商品检验中品质检验的主要内容是对商品的外观、化学成分、物理性能等进行检验。（）
A. 正确
B. 错误
The crew was unable to（）access to the engine room due to the extreme heat.
A. maintain
B. retain
C. gain
D. contai
微信支付 
支付宝支付