[单选] When fueling has been completed（）.

A . the fuel tank fill pipe should be left open to allow vapors to vent from the tank
B . the engine should be started immediately to prevent vapor lock in the fuel line
C . all hatches should be opened and all compartments should be ventilated
D . open the fuel line and drain a small amount of gasoline into the bilge to clear the line of sediment

张永庆为什么被称为电影传媒第一人（）。第一个在电影上做广告。第一个做电影。做电影做的好。传媒做到第一。简述孔子“君子观”的主要内容。 To determine that a compartment contains sufficient oxygen to sustain life, you should use a/an （）. explosimeter。 oxygen indicator。 fresh air indicator。 all of the above。 An oxygen indicator will detect （）. concentrations of explosive gas。 an oxygen deficiency in a space。 the presence of harmful amounts of carbon monoxide。 All of the above。 Word2003中，以下哪一项功能可以帮助您查找不熟悉单词的近义替换词（）。同义词库。自动编写摘要。拼写和语法。自动更正。 When fueling has been completed（）.

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[单选] When fueling has been completed（）.

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