CA6140普通车床控制电路中，主轴电动机和冷却泵电动机起动控制关系是
A. 点动
B. 长动
C. 两地控制
D. 顺序控制
查看答案
普通车床电气控制，正确的说法有
A. 主运动控制可能有正反转
B. 冷却泵控制可能有正反转
C. 快速移动控制采用点动控制
D. 冷却泵在主运动开始后才可以工作
CA6140普通车床控制电路中，刀架快速移动电动机未设过载保护，是由于该电动机容量太小。
A. 对
B. 错
In one win-win situation, people use a website in some way and are exposed to the sponsor’s advertising. What does the phrase “win-win situation” refer to?
A situation which is beneficial for a limited number of people
B. A situation that no one wins
C. A situation that can be won.
D. A situation that is good for everyone involved;
James had often been _____ his older brother Jack.
A. taken for
B. known for
C. famous for
D. mistaken for
微信支付 
支付宝支付