18. 船舶推進軸系統中，就下圖而言(5)應為下列何者？ (A) 前緣(leading edge) (B) 後緣(trailing edge) (C) 推力面(thrust surface) (D) 拉力面(drag surface)

8. The followings are procedures of start the engine. Which step is incorrect? (A) Set the stop lever in the RUN position. (B) Make sure the pressure indicator cock is closed. (C) Set the operation selector switch to the ENGINE position control panel to be selected. (D) Make sure the gear pump is in the GEAR OUT position.