海船船员考试
单选题Whenever visible traces of oil are observed on or below the surface of the water in the immediate vicinity of ship or its wake，Governments of Parties to the Convention should，to the extent they are reasonably able to do so，promptly（）the facts bearing o
题目
observe
investigate
see
look
相似问题和答案
第1题：
The Chief and 3rd Engineers went below，changed the fuel to diesel oil and reduced the engine to slow ahead．This sentence implies all those below except that ________ ．
A.the Engine was not on slow ahead before Chief and 3rd Engineers went down
B.the Engine was using diesel oil before Chief and 3rd Engineers went down
C.the Engine was using fuel oil before Chief and 3rd Engineers went down
D.the Chief and 3rd Engineers went into the Engine Room to operate the Engine
第2题：
A carbon dioxide fire extinguisher should be recharged ______.
A.at least annually
B.whenever it is below its required weight
C.only if the extinguisher has been used
D.before every safety inspection
二氧化碳灭火器一般重量减少百分之十必须从新填装。
第3题：
Oil fires are best extinguished by ______.
A.cutting off the supply of oxygen
B.removing the fuel
C.cooling below the ignition temperature
D.spraying with water
灭油火的最好灭火器是切断氧气供应。
第4题：
plugging gooseneck tank vents to prevent accident overflow
maintaining a high transfer rate until a slight trickle of oil is observed flowing from the overflow line
sounding the tanks frequently and reducing the transfer rate as the level approaches maximum fill
maintaining a supply of chemical dispersant to cleanup minor oil spills adjacent to the ship
第5题：
How does foam extinguish an oil fire ?______.
A.By cooling the oil below the ignition temperature
B.By removing the fuel souce from the fire
C.By excluding the oxygen from the fire
D.By increasing the weight of the oil
泡沫灭火器时怎样灭油火的？通过释放泡沫隔绝空气。
第6题：
Which statement is TRUE of a gasoline spill ________．
A.It is visible for a shorter time than a fuel oil spill
B.It is not covered by the pollution laws
C.It does little harm to marine life
D.It will sink more rapidly than crude oil
第7题：
As an extinguishing agent, foam ______.
A.conducts electricity
B.should be directed at the base of the fire
C.is most efffective on buring gases which are flowing
D.extinguishes by cooling oil fires below ignition temperature
对于灭火剂，泡沫灭火剂导电。
第8题：
Excessive oil foaming in the crankcase of a refrigeration compressor is most likely to occur when the compressor
A.has run continuously for a long period
B.suction pressure is below normal
C.oil level is below normal
D.starts after a long idle period
第9题：
is most accurate before sunrise
is most accurate after sunset
should only be observed when the Sun's lower limb is above the horizon
is most accurate when the Sun's center is observed on the visible horizon
第10题：
O-ring
gasket
washer
packing