（）are increasingly used as main engine on merchant vessels, because they have a high Hp/Weight ratio.
- ASlow speed diesel engines
- BMedium-speed diesel engines
- CSteam engines
- DGasoline engine
问题
（）are increasingly used as main engine
参考解析：
分类：船舶电气与船舶安全题库
相关推荐
-
1、Generally，（）are used as the track char
Generally，（）are used as the track charts on the high sea，（）are used for harbors，inland waters and coastal areas．AMercator charts／Loran cha...
-
2、WLANs are increasingly popular becaus
WLANs are increasingly popular because they enable cost-effective connections among people, applications and data that were not possible, or not ...
-
3、Main engine room control console alarm
Main engine room control console alarms are to be of the self monitoring type, meaning that an open circuit to a particular alarm circuit wil...
-
4、Increasing the load on an engine equip
Increasing the load on an engine equipped with a constant speed mechanical governor, will cause the engine speed to initially （）.AincreaseBdecreaseCfluctuateDremain constant
-
5、Which are the two main uses of a VIO s
Which are the two main uses of a VIO server?（）AVirtualize network and memory to LPARs.BVirtualize network and storage to LPARs.CVirtualize memory and processors to LPARs.DVirtualize storage and processors to LPARs.
-
6、As engine RPM is increased from idle s
As engine RPM is increased from idle speed to full load speed, which of the conditions listed will decrease?（）ACompression ratioBFuel/Air ratioCCompression pressureDLube oil pressure