A、microscopic steel shavings
B、abrasive waste
C、anti-oxidant compounds
D、oxidation by-products
更多“The major source of chemical contaminants in hydraulic fluid is （）.”相关的问题
A、the main source of energy B、emergency source of electrical power C、the reserve source of energy D、all of above
A、elected by the majority party B、chosen from the majority and minority parties C、members of the majority party D、chosen freely from the Congressmen and Senators
A、centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump B、centerline of the pump and the suction liquid level when the source of liquid is above the pump C、centerline of the pump and the level of the discharge liquid D、liquid levels of the suction and discharge
A、A.base of the equipment B、B.top of the equipment C、C.power source D、D.source of the fire
A、While the ship is at sea，there must be available at all times a supply of electrical energy sufficient to operate the radio installations and to charge any batteries used as part of a reserve source of energy B、Both the VHF and MF/HF installations must be simultaneously supplied C、A means of ensuring a continuous supply of electrical power must be provided to all GMDSS equipment that could be affected by an interruption in power D、If a UPS or equivalent is used to supply power to the ship's GPS receiver or other source of positional information，a means must be provided to ensure the continuous supply of the information in the event of a failure to the ship's main or emergency source of power
A、ermit all packets matching the first three octets of the source address to all destinations B、permit all packet matching the last octet of the destination address and accept all source addresses C、permit all packet matching the host bits in the source address to all destinations D、permit all packet from the third subnet of the network address to all destinations
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