单项选择题
A.Colorless liquid,mild aromatic odor B.Pale yellow liquid,strong odor C.Colorless liquid,faint odor D.Straw-colored liquid,sweet-odor
According to regulations,access to a cargo pumproom in ...
单项选择题According to regulations,access to a cargo pumproom in a tank vessel carrying grades C or D liquid cargo shall be().
A.from areas equipped with power ventilation B.only from enclosed areas free from sources of vapor ignition C.from the open deck D.from within the vessel
Access to a cargo pumproom on a tank vessel carrying gr...
单项选择题Access to a cargo pumproom on a tank vessel carrying grades A,B,C or D liquid cargoes shall be().
A.at least 13.1 feet away from the galleys,living quarters or navigation spaces B.from the open deck C.only from areas equipped with power ventilation systems D.isolated from any part of the vessel which normally contains sources of vapor ignition
A synonym for chloroform is().A.trichloromethaneB.sulfu...
单项选择题A synonym for chloroform is().
A.trichloromethane B.sulfuric chlorohydrin C.chlorine gas D.4-methyl phenol