汽车车身高度控制时出现不规则的变化,其可能的故障部位是()
A. 空气泄露
B. 车身位移传感器
C. 控制系统的电脑
D. 以上均是
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Permission is requested to pump out about 200 tons of clean sea ballast water for () purposes.
A. safe manning
B. trimming
C. avoiding collision
D. preventing pollutio
Hello.Is Jim there?()
A. This is Jim. Who's speaking, please?
B. I'm afraid I won't be free.
C. This is the right number.
D. There's no hurry.