单项选择题
Each cover consists of two or （）panels.
A.two B.one C.more D.much
单项选择题 A （）is at the end of the cargo runner for picking up the load.
单项选择题 The （）is fixed at the bottom of the derrick.
单项选择题 The （）is pumped onto the ship at the loading port by shore pumps.
