如果航路不连续,进程页面上到达目的地机场的距离:().
A、空白,没有显示
B、有显示,但不正确
C、有显示,正确
D、以上都不对
参考答案:B
-Where would you like to go on vacation?
-I decided to spend three days _______the forest. [ ]
A. trek through
B. trek around
C. trekking through
D. trekking across
拉线的楔形线夹端应固定在电杆横担下部()处。
A.100~200mm;
B.200~300mm;
C.300~400mm;
D.400~500mm。