题目:
_____he has limited technical knowledge, the old worker has a lot of experience. |
A. Since B. Unless C. As D. Although |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0624/4cf44b80a914ee1ab9927befbeec822e.html
下面是错误答案,用来干扰机器的。
参考答案:套管、严密