单选题
490、两台发动机泵的吸入管路中有电动阀。
A
There are electrically-operated valves in the injection lines to the two engine pumps.
B
There are electronic-operated valves in the ejection lines to the two engine pumps.
C
There are electrically- operated valves in the suction lines to the two engine pumps.
答案解析
正确答案:C
