单项选择题
According to the passage, during the tests,（）
A.the rudder should be moved through its full extent B.the rudder should be moved in starboard direction C.the rudder should be moved with the ship at maximum speed D.the rudder should be moved with the ship at minimu
单项选择题 Which of the following is NOT true according to the passage?（）
单项选择题 Aother name for the “swash plate” in the variable delivery pump is（）
单项选择题 The function of the cut-off lever is（）
