航海英語(yǔ)各種英文申請(qǐng)書單項(xiàng)選擇題每日一練(2019.07.24)

來源：考試資料網(wǎng)

1 A green buoy has a yellow triangle on it. This is a(n)（）.

2 A drilling bit which is doughnut shaped to permit recovery of the center portion of the hole drilled is called a（）.

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3 PLS BE INFORMED THAT SUB VSL’S TWO KINDS OF CERTIFICATES HAVE EXPIRED. ONE IS DERATING CERTIFICATE AND THE OTHER IS SAFETY EQUIPMENT CERITFICATE. According to this telex,（）.

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4 A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound（）.

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5 For the purposes of cargo oil containment，the fixed container under the manifold of an eight-inch loading line must hold a minimum of（）.

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