航海英語燃燒與爆炸單項(xiàng)選擇題每日一練(2019.01.26)

來源：考試資料網(wǎng)

1 A combustible gas indicator meter is calibrated to read the percentage of（）.

2 Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.

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3 According to the T-Boat regulations the reason for providing adequate ventilation for a battery storage area is to prevent（）.

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4 During a training exercise a submarine indicating that a torpedo has been fired will send up smoke from a float. The smoke’s color will be（）.

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5 Convection spreads a fire by（）.

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