A、on both the external and internal top edges
B、on both the external top and bottom edges
C、on both the external and internal bottom edges
D、on all the four edges
更多“In order to keep the oil film on the cylinder liner during the running-in period, the piston rings are slightly rounded（）”相关的问题
A、Operate the wheel and stand by B、Keep a lookout and operate steering gear C、Enter telegraph orders in the bell book D、Operate the telegraph and enter telegraph orders in the bell book
A、operate the wheel and stand by B、keep a lookout and operate steering gear C、enter telegraph orders in the bell book D、operate the telegraph and enter telegraph orders in the bell book
A、a new bacteria colony should be put into the plant in advance B、the disinfection chemicals should be always used C、the air blower should be started and keep running in advance D、the nutrient for bacteria should put into plant in advance
A、keep the air from being carried into the engine B、keep the moisture from being condensed C、keep the danger from being carded into the engine D、take away the condensate from the air
A、avoid false alarms as a result of condensing water vapor B、avoid danger of frost under very cold weather C、reduce the viscosity of the crankcase atmosphere in order to improve the fluidity D、keep the temperature of the oil mist detectors in an appropriate range
A、placed on deck to support the cargo B、separation pieces used to keep cylinders upright and steady C、shims for stowing balded cargo D、nets placed across the hatch opening to keep the cargo from falling in the hatch
客服
TOP
查看正确答案
