更多"The position of the interface betwe"的相关试题:
[单项选择]While loading bulk oil, you notice oil on the water near the bargeWhich of the following actions should you carry out FIRST?（）
A. Search the vessel for leaks
B. Notify terminal superintendent
C. Stop loading
D. Notify the Coast Guard
[单项选择]The interface between the liquid seal (water) and the oil should be positioned （） possible to the bowl periphery.
A. as far as
B. as soon as
C. as close as
D. as closer as
[单项选择]In a purifier, the interface between the liquid seal and the oil should be positioned as close as possible to （）.
A. the outlet of oil
B. the outlet of water
C. the bowl periphery
D. the center of bowl
[单项选择]A high rate of separation between oil and water is favored by （）.
A. large size of oil globule
B. low temperature
C. high viscosity
D. high flow rate
[单项选择]（） is the breakdown of surface tension between oil droplets in an oil water mixture which causes them to join and increase in size.
A. Wear
B. Contaminating
C. Coalescence
D. Coarse separating
[单项选择]Factor influencing the position of the interface between the liquid seal and the oil in a purifier is （）.
A. throughput
B. back pressure
C. gravity disc
D. None of the above is wrong
[单项选择]The film of oil between the rings and the liner is not only essential for the lubrication but also plays an important part in achieving （）.
A. an oil seal
B. removing heat
C. a gas seal
D. cooling the piston
[单项选择]There should be a lubricating oil （） between the main beatings and the crankshaft.
A. film
B. cap
C. lacquer
D. shell
[单项选择]Bottom blow valves are installed on auxiliary water-tube boilers to （）
A. completely drain the boiler in an emergency
B. prevent sludge from forming in the drum
C. remove floating impurities from the boiler water surface
D. remove settled solids from the water drum
[单项选择]What are the most important reasons for using water fog to fight fires?（）
A. Smothers burning surfaces，organically destroys fuel
B. Cools fire and adjacent surfaces，provides protective barrier
C. Reaches areas not protected by steam or CO2 smothering systems
D. Allows fire to be attacked from leeward，saturates liquid surfaces
[单项选择]Your vessel has been damaged and is taking on water，but you do not require immediate assistance. You would preface a message advising other vessels of your situation with（）.
A. Mayday-Mayday-Mayday
B. Pan-Pan (3 times)
C. Securite-Securite-Securite
D. SOS-SOS-SOS
[单项选择]Heights are expressed（）meters above mean high water.
A. in
B. on
C. by
D. with
[单项选择]
If a small electric motor is immersed in salt water it should be （）
(1) washed in fresh water
(2) dried in an oven
A. (1) only
B. (2) only
C. both (1) and (2)
D. neither (1) or (2)
[单项选择]It is necessary to remove （） from the cooling water spaces to improve heat transfer.
A. lime
B. frost
C. scale
D. scar
[单项选择]On no account （）proceed without pilot in this water area．
A. the vessel
B. shall not vessel
C. the vessel should
D. should vessel
[单项选择]We（）a sharp lookout while sailing in the iced waters.
A. keep
B. kept
C. are keeping
D. have kept
[单项选择]If the sump（）were to rise this would indicate water leakage into the oil an d an investigation into the cause must be made.
A. temperature
B. viscosity
C. lever
D. level
