at which/to which
from which/at which
to which/from which
in which/on which
第1题：
A、which
B、that
C、what
D、this
第2题：
Sub-cooling is a method of reducing the temperature of the liquid refrigerant below its ______.
A.freezing point
B.floc point(浊点)
C.condensing temperature
D.compression temperature
第3题：
A、the faster
B、faster
C、the slower
第4题：
evaporation
frosting
condensing
compressing
第5题：
Reid vapor pressure is ______．
A.exerted by liquid cargo on the sides of a tank
B.exerted by liquid cargo on a cargo hose body
C.the lowest temperature and pressure that will cause a flammable liquid to give off vapors
D.a measurement of the amount of flammable vapors given off by a liquid at a certain temperature
第6题：
A.flash point
B.fire point
C.upper explosive limit
D.lower explosive hmlt
第7题：
The flash point of a liquid refers to the temperature ______.
A.at which a liquid will give off inflammable（易燃的） vapors
B.at which a liquid will burn steadily
C.at which a liquid will explode
D.that a liquid must reach before it will flow readily
第8题：
The higher the temperature,()the liquid evaporates.
A. the faster
B. faster
C. the slower
第9题：
exerted by liquid cargo on the sides of a tank
exerted by liquid cargo on a cargo hose body
the lowest temperature and pressure that will cause a flammable liquid to give off vapors
a measurement of the amount of flammable vapors given off by a liquid at a certain temperature
第10题：
Setting point
Dew point
Flash point
Lean point