更多"The pressure difference of the gaug"的相关试题:
[单项选择]"gauge pressure" means（）.
A. "vacuum"
B. "the excess of pressure above atmosphere"
C. "figure on a gauge"
D. Any of the above
[单项选择]The pressure difference before and after the lube oil filter indicates （）the filter should be cleaned.
A. when
B. how
C. where
D. whether
[单项选择]The greater the pressure difference between a high and a low pressure center，the（）.
A. dryer the air mass will be
B. cooler the temperature will be
C. greater the force of the wind will be
D. warmer the temperature will be
[单项选择]The gauge pressure inside a container is -0~5kg/cm2, then what is the absolute pressure exerted to the inside surface of thin container?（）
A. 0~05Mpa
B. 0~95Mpa
C. 1~05Mpa
D. 0~5Mpa
[单项选择]How many PPM of the oily water can be pumped out within 12 miles along the China coast line?（）.
A. at least 15 PPM
B. about 15 PPM
C. up to 15 PPM
D. no less than 15 PPM
[单项选择]What kind of pressure systems travel in easterly waves（）.
A. High pressure
B. Low pressure
C. Subsurface pressure
D. Terrastatic pressure
[单项选择]The fuel oil pressure and forced draught pressure should be matched to ensure good combustion with a full steady flameIn the sentence the word “match” means （）
A. join with
B. mix
C. be equal to
D. be constant
[单项选择]Before the oily water separator put into operation, it should be （）
A. filled with bilge water
B. filled with oil
C. filled with clean water
D. be emptied
[单项选择]High pressure and low pressure alarms must be tested（）.
A. no earlier than 24 hours prior to loading
B. no later than 24 hours prior to loading
C. anytime prior to loading
D. weekly
[单项选择]Accumulations of oily rags should be（）.
A. kept in nonmetal containers
B. discarded as soon as possible
C. cleaned thoroughly for reuse
D. kept in the paint locker
[单项选择]Which of the following pumps will most affect oily water separator performance and give the worst result?（）
A. reciprocating pump
B. vane pump
C. screw pump
D. centrifugal pump
[单项选择]When started, a complete oily water separating unit is first filled （）The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.
A. with dirty water
B. with clean water
C. by oily water
D. by mixed water
[单项选择]During inspection of oil and oily mixtures from machinery spaces, which of the following factors should be taken into account by the PSCO? （）
A. The quantity of oil residues generated
B. The capacity of sludge and bilge water holding tank
C. The capacity of the oily water separator
D. All of the above
[单项选择]When oily water separator is operating, which measure （） is wrong.
A. pay attention to operating parameters
B. renew and clean separating units in time
C. check oil level in separator to prevent overload
D. check separating effect, if it is bad, flush with large capacity water pump
[单项选择]The following measures can be used to improve oily water separator’s separating effect except （）
A. overhauling every two year
B. working at intervals
C. renewing filtration material
D. pumping bilge water from different layers respectively
[单项选择]After stopping oily water separator, sea water should be permitted for （） minutes,（）should be closed after stopping pump to reduce oxidation corrosion of inner wall.
A. 15；inlet value
B. 15；inlet and outlet value
C. 30；inlet value
D. 30；inlet and outlet value
[单项选择]The most suitable pump for oily water separator feed duties is （）.
A. a reciprocating pump
B. a vane pump
C. a centrifugal pump
D. a triple screw pump
[单项选择]The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.
A. soluble state
B. solid state
C. liquefied state
D. inert state
