The weight of liquefied petroleum gas vapors as compared to air is().
A、variable
B、the same
C、lighter
D、heavier
A、variable
B、the same
C、lighter
D、heavier
A、the number of packages B、the number of weight C、both the number of packages and of the weight D、neither the number of the packages nor of the weight
A、Pounds of force necessary to damage a container B、Total weight of a container and contents C、Weight of a container D、Weight of the contents of a container
A、the total weight in air of the casing string is removed from the ship B、the hook load (weight of the casing string) is removed from the ship C、the weight of the casing inside the riser is removed from the ship D、the weight of the casing string added to the weight of the fill-up mud is removed from the ship
A、Concentration of weight aft B、Concentration of weight forward C、Concentration of weight amidships D、Concentration of weight at both ends of the vessel
A、the weight of the ship's structure and its machinery B、bunker and other consumable loads C、ballast loads D、all those weights,such as the weight of the bunkers,ballast,provisions and cargo
A、weight of cable to weight of vessel B、weight of cable to weight of anchor C、length of anchor to depth of water D、length of cable to depth of water
A、Discharging weight from lower decks B、Loading weight in upper decks C、Shifting weight from lower to upper decks D、Shifting weight from upper to lower decks
A、Loading weight on deck B、Discharging weight from lower decks C、Shifting weight from upper to lower decks D、Shifting weight from lower to upper decks