“贸易方式”栏：( )。
A．进料加工
B．一般贸易
C．来料加工
D．合资合作设备
参考答案：B
The old man was the only person on the spot, so the policeman asked him to _____ the facts as he
remembered them. [ ]
A. set up
B. set down
C. dig out
D. keep out
开燃油跳闸阀的操作如何进行？
