航海英語特種貨物運輸及有關規(guī)則單項選擇題每日一練(2019.01.17)

來源：考試資料網(wǎng)

1 Cargo booms must be weight tested to recertify the Safe Working Load (SWL) every（）.

2 The type of carrier required to file a copy of freight tariffs would be the（）.

3 If a cargo of kerosene were considered too lean to explode，then it must be（）.

4 Air gap is the vertical distance between the bottom of the hull and the（）.

5 Sea water temporarily pumped into tanks to simulate the increased vertical loading of environmental forces is termed（）.