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单选题
Solid waste generation，and electricity and water consumption are costly and have their own set of environmental（）.
A
inspect
B
impairs
C
impacts
D
insects
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单选题The blowers of an inert gas generation system aboard a tanker，will be automatically secured if（）.A
normal water supply at the water seal is lostB
the temperature of the inert gas being delivered to the cargo tanks is more than 150°FC
the cooling water supply to the scrubbers is lostD
all of the above
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