Given the same water depth and line tension,the holding power of a 19 pound/foot wire rope mooring system in comparison to the holding power of a 90 pound/foot chain mooring system will be().
A、weaker
B、equal
C、greater
D、indeterminable
A、weaker
B、equal
C、greater
D、indeterminable
A、A.mean low water B、B.the same as that used for the charts of the locality C、C.the highest possible level D、D.given in table three of the tide tables
A、natural circulation of the water in the water tube boiler is better than that in the fire tube boiler B、for the same output the water tube boiler will carry less mass of water compared with the fire tube boiler C、the water tube boiler will cost shorter time for steam raising D、the water tube boiler require lower skill in operating and maintaining
A、can fit any size hose B、converts a stream of water into a fog C、increases the amount of water reaching the fire D、can spray two streams of water at the same time
A、higher than the first stage feed-water temperature and absolute shell pressure B、lower than the first stage feed-water temperature and absolute shell pressure C、the same as the first stage feed-water temperature and absolute shell pressure D、not related to the feed-water temperature and absolute shell pressure
A、induce vomiting B、absorb the poison from the blood C、neutralize the poison in the blood D、increase the digestive process and eliminate the poison
A、A.induce vomiting B、B.absorb the poison from the blood C、C.neutralize the poison in the blood D、D.increase the digestive process and eliminate the poison
A、the painter B、the after boat fall only if the boat is waterborne C、both falls at the same time only if the boat is waterborne D、both falls at the same time even if the boat has not reached the water