在倾斜巷上停车时,将停车制动手柄置于制动位置并将变速杆放入()。
A.高速档
B.1档或倒档
C.空挡
D.无所谓
参考答案:B
What does blowing tubes accomplish?()
A.Eliminates unburned fuel oil residues from the firebox
B.Increases boiler efficiency
C.Flushes away mineral deposits inside the water tubes
D.Cleans soot deposits from the inside of the stack
()是压缩机开车前必须要做的准备工作。
A.引入密封氮气和隔离氮气
B.打开压缩机进出口阀
C.检查安全器件
D.启动冷凝液泵