航海英語船舶結(jié)構(gòu)基本知識單項選擇題每日一練(2019.01.25)

來源：考試資料網(wǎng)

1 For existing ships，（）is not an improvement to safety.

2 Upon underwater（）by divers，there are no apparent（）on the bottom plates of the said vessel.

3 As to the stained plates，the fault lies（）you.

4 Shell plating that has curvature in two directions and must be heated and hammered to shape over specially prepared forms is called（）.

5 Which arrangement of shell plating is used most in modern shipbuilding（）.