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单选题
In the event of failure of an auxiliary such as a lubricating pump, the standby pump is started and put on the line automatically“the line” in this sentence refers to（）
A
fuel manifold
B
lubricating pipe line
C
auxiliary engine pipe line
D
generator output line
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考题
单选题Ignition failure in an automatically controlled auxiliary boiler could be caused by（）A
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考题
单选题Burner ignition failure in an automatically fired auxiliary boiler would be caused by（）A
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考题
单选题Flame failure in an automatically fired auxiliary boiler can from a/an （）A
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clogged fuel nozzleD
broken high tension lead
考题
名词解释题失效时间failure event
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