当黄电动泵电门置于“OFF”位,操纵货舱门选择器开关门时,此时黄系统压力:()
A.只能操纵货舱门;
B.只能操纵飞控系统;
C.A+B。
参考答案:A
各柜员每天需要(),以自动记录柜台和柜员的对应关系。
. ______ smoking, he would not have got cancer in the lung.
A.Was he given up
B.Had he given up
C.Did he give
D.If he gave up