如果房间里有东西着火了，它周围的东西应该怎么处理？
查看答案
规则中“应避免横越他船前方”的规定，仅适用于交叉相遇局面中的让路船。()
According to the author, what is a problem for foreign students at state universities？
A. The problem is that they must pay less than out-of-state students.
B. The question is that only a few of those foreign students are accepted.
C. The issue is that it is illegal for them to get scholarships at state universities.
D. The trouble is that their scholarships are smaller than those of native students.
在钻井泵克服流动阻力推动钻井液循环时，井壁和井底也承受了该流动阻力，因此，井底压力增加。()
微信支付 
支付宝支付