flowmeter
viscometer
micrometer
feeler
第1题:
A sling psychrometer is a(n) ______.
A.type of cargo gear
B.instrument used in celestial navigation
C.instrument used to measure relative humidity
D.instrument used to measure specific gravity
第2题:
An aneroid barometer is an instrument ______.
A.used to measure the speed of wind
B.in which the pressure of air is measured
C.that tells which direction a storm is coming from
D.used to measure the height of waves
第3题:
Any open flame can’t exist in this business building
A.Yes. We’ve removed all the flammable gas.
B.Yes. We’ve searched everywhere for flammable liquid
C.Yes. All the flammable liquid and gas have been removed already.
D.Yes. We’ve removed all the liquid, gas and wood which can be burned
第4题:
evaporation
frosting
condensing
compressing
第5题:
Each ship having an inert gas system must have a portable instruments to measure concentrations of hydrocarbon vapor in inert atmospheres and also to measure ______.
A.nitrogen
B.oxygen
C.carbon dioxide
D.water vapor
第6题:
A check line is ______.
A.A safety line attached to a man working over the side
B.Used to measure water depth
C.Used to slow the headway of a barge
D.Used to measure the overhead height of a bridge
第7题:
Combustible gas indicators measure the presence of combustible gas as a percentage of the____.
A.flash point
B.upper explosive limit
C.lower explosive limit
D.fire point
第8题:
The______is used to measure the volume of a liquid or gas through a pipeline within any given period of time
A.flow-meter
B.viscometer
C.micrometer
D.feeler
第9题:
draw the liquid in;force the liquid out
force the liquid out;draw the liquid in
suction;draw
deliver;outlet
第10题: