抗胆碱药为()。
A.东莨菪碱
B.安定
C.巴比妥钠
D.哌替啶
E.氟哌利多
参考答案:A
I'm going to help __________ the city parks with myclassmates to make them clean and tidy. [ ]
A. fix up
B. make up
C. clean up
D. put up
建设工程合同的概念和特征