【简答题】To swim across the English Channel takes at least nine hours. It ‘ s hard work and it makes you short of breath. To fly over the channel takes only twenty minutes as long as you ’ re not held up at th...
【简答题】阅读理解。 根据短文内容,判断句子的正误.正确的在括号内写“T”,错误的写“F”。 If you go into the forests with friends, stay with them. If you don't,you may get lost. If you do get lost, this is what you should do. Sit down and stay wher...
【单选题】为了保证镗杆和刀体有足够的刚性,加工孔径在30〜120 mm范围内时,镗杆直径一般为孔径的( )较为合适。
【单选题】If you hear more than six short blasts and one long blast of the whistle supplemented by the same signal on the general alarm, you should ______.
B.
go to your man overboard station
C.
go to your lifeboat station
D.
stand by for collision
【简答题】The faster way to travel in a city is by subway. In many big cities, there 1 usually more than one subway lines. How to travel by 2 ? Here is something to know 3 you travel by subway. First you should...
【单选题】颜色呈红色或鲜红色,颜色较为均匀,高度为70cm属于哪种珊瑚。()