[单选题]_____ connected to the moving tiller will bring the floating lever pivot and the lever into line at right angles to the screw shaft axis.
[单选题]In order to reduce the chance of detentions ships should routinely verify the following except for: ______.
[单选题]A cargo hold has been determined to have a relative humidity of 80% and a dry bulb temperature of 85℃. When the hold is sealed and the dry bulb temperature decreases, the relative humidity in the space will_____ .
[单选题]One of the consequences in continuing to operate a centrifugal bilge pump with the discharge valve closed, is that the_____
[单选题]21. Following an overhaul of a crosshead type diesel engine, the engine is jacked over（盘车） with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?. .
[单选题]Too low hot water flow for fresh water generator, due to incorrectly adjusted by by-pass valve will cause____.