采用纵包管方式对蝶形引入光缆进行包扎保护,主要在光缆穿越墙洞、障碍物以及与其它线缆交叉处使用。
参考答案:错
About 70 percent of the population ______ in that country in the mountains and only 30 percent of its land ______ farmland.
A.lives; are B.live; areC.live; is D.lives; is
I want to _________ a picture![ ]
A. take
B. look
C. book
D. table