正确答案: B
防止海水流入机舱
题目:水润滑艉轴承首端设置填料函式密封装置是为了()。
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学习资料的答案和解析:
[单选题]航行中一旦发现增压器振动,则首先应该()。
C.降低转速
[单选题]轴系同轴度误差应()。
交点在δmax-φmax三角形内
[单选题]螺旋桨与艉轴的油压套合无键连接方式是目前国内外最先进的安装工艺,具有()等优点。
可靠连接、拆装方便
[单选题]滑油系统的备车准备工作应检查()。Ⅰ.循环油柜油位;Ⅱ.轴承油位;Ⅲ.储油柜油位;Ⅳ.分油机
Ⅰ+Ⅱ
[单选题]Low compression of diesel engine may result from ()
a worn cylinder
[单选题]The diffuser prevents pressure pulses from one cylinder () another during operation.
interfering with
[单选题]VIT means ()
variable injection timing
[单选题]Fuel oil transfer systems used onboard diesel propelled vessels are required to have ().
two fuel oil transfer pumps provided where one is to be independent of the main engine