加工过程中,如出现异常现象,可按下“急停”按钮,以确保人身和设备的安全。
A. 对
B. 错
数控车间的企业5S标准是指整理、整顿、清扫、清洁和素养。
A. 对
B. 错
•(1) If the country’s imports were more than exports, the country would have a trade surplus.
A. 对
B. 错
•(2)The mode of transportation includes only that by air and land.
A. 对
B. 错