21. 當壓縮機狀況和其他溫度條件不變時，隨著冷凝溫度提高，冷媒壓縮機的軸功率有何變化？ (A) 降低 (B) 波動 (C) 增大 (D) 無關

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.