航海英語船舶結(jié)構基本知識單項選擇題每日一練(2019.01.18)

來源：考試資料網(wǎng)

1 The pivoting point of a fully loaded vessel with normal trim proceeding ahead at sea speed is（）.

2 The type of joint formed when a third small plate is riveted over two plates butted together is called a（）.

3 The primary barrier of a bulk carrier is formed by（）.

4 The system of valves and cargo lines in the bottom piping network of a tanker that connects one section of cargo tanks to another section is called a（）.

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5 Which space（s）is（are）deducted from gross tonnage to derive net tonnage（）.

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