通径是指防喷器的上下连接法兰的直径。
参考答案:错
— I come all the way to say "Thank you" and we ________ it without you.
— Think nothing of it. [ ]
A. should have done
B. mustn't have done
C. couldn't have done
D. needn't have done
我国的“定单”培养,“产教结合”,“校企合作”,“工读结合,半工半读”等新的办学模式已日臻成熟,目的就是让职业学校教育能够最大程度地符合企业用工实际。