对编入货物列车中的DL1型预制梁运输专用车组,空车运行时,所有专用车钩缓冲停止器应处于()并锁闭。
A、非工作位
B、工作位
C、开发位
D、自由位
参考答案:A
尊重客观规律不利于发挥主观能动性。
Wang Fan, could you give us _____ on how to learn English _____? [ ]
A. some advices; good
B. some advice; good
C. any advices; well
D. some advice; well