单选题An oil water monitor is required in order to measure （）.Athe oil content in waterBthe water content in fuel oilCthe water level in bilge wellDthe oil level in bilge well
单选题
An oil water monitor is required in order to measure （）.
A
the oil content in water
B
the water content in fuel oil
C
the water level in bilge well
D
the oil level in bilge well
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