23. 下列有關離心式泵特性的敘述何者為錯誤？ (A) 適於高速旋轉 (B) 流動穩定、無脈動現象 (C) 出口水頭高 (D) 起動時須加注引水

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.