处理胃肠手术后的腹胀，宜首选（）
A.胃肠减压
B.肛管排气
C.腹部按摩
D.肌内注射新斯的明
E.高渗盐水低压灌肠
参考答案：A
—May we leave the classroom now?
—No, you . You to leave until the bell rings. [ ]
A. must; are allowed
B. can't; aren't supposed
C. needn't; aren't allowed
建设单位工程文件资料分为（）等。
A.决策立项文件
B.勘察设计文件
C.进度控制资料
D.质量控制资料
E.工程竣工验收及备案文件
