基站（BS）天馈线系统方位角允许偏差±5度.
参考答案：对
It's important _____. [ ]
A. for us to learn English well
B. to us to learn English well
C. for us learning English well
D. of us to learn English well
重症患者胃肠功能障碍的临床表现为（）。
A.腹泻
B.腹胀
C.肠道细菌、内毒素易位
D.消化道出血
E.以上都是
