The diffuser prevents pressure pulses from one cylinder () another during operation.
A、to interfere with
B、interfering with
C、to help scavenging
D、helping scavenging
A、to interfere with
B、interfering with
C、to help scavenging
D、helping scavenging
A、and preventer have equal stress B、stronger than the preventer to minimize the danger of separation C、take a lighter load than the preventer as a safety factor D、take the stress in case the preventer parts
A、prevent the boom from being raised too high B、prevent the boom from swinging C、support the boom when not in use D、prevent the boom from being lowered
A、A.prevent the seawater from intergrating B、B.prevent the lube oil from running out of the outside aboard C、C.strengthen the intencity of the sterntube D、D.prevent the mud and sand from entering the lube oil system
A、Keep the wire soft and manageable B、Lubricate the inner wires and prevent wear C、Prevent kinking D、Prevent rotting
A、A.the Prevention of Pollution by Oil B、B.the Prevention of Pollution by Noxious Liquid Substances in Bulk C、C.Prevention of Pollution by Garbage from Ships D、D.Prevention of Air Pollution from Ships
A、A.prevent the towboat from sliding when the rudder is moved B、B.prevent the barges from spreading out when backing down C、C.hold the towboat securely to the barges D、D.prevent the sidewise movement of the face barges