YC6LN-50系列气体发动机的低压电磁阀由线圈驱动阀芯,由ECU控制其开合,停机状态下处于()状态。
A、常开
B、常闭
C、常开或常闭
D、半开半闭
参考答案:B
对资源的保护应坚持()的原则。
A.地方各级人民政府重点保护
B.谁开发谁保护
C.谁污染谁治理
D.谁破坏谁受罚
E.谁开发谁利用
_______the fact that there was great prejudice against women entering men’s profession then, she succeeded as a manager of a big company.
A.While
B.In spite of
C.Despite of
D.As