单项选择题
Shell plating that has curvature in two directions and must be heated and hammered to shape over specially prepared forms is called（）.
A.compound plate B.furnaced plate C.flat plate D.rolled plate
单项选择题 Panting frames are located in the（）.
单项选择题 No deduction is allowed for the（）mess-room in ships having passenger accommodation，which are not also provided with a passengers’ mess-room.
单项选择题 Metal plates that cover the top of the hawsepipe are called（）.
