联合国工业发展组织从资金投入—产出循环的角度,将项目周期划分为( )时期。
A.6个B.5个C.4个D.3个
参考答案:D
Mr Brown is coming to visit our school. Our English teacher will _____ at the airport. [ ]
A. take him off
B. pick him up
C. see him off
D. take him up
药物吸收到达稳态血药浓度时意味着()
A.药物作用最强
B.药物的消除过程已经开始
C.药物的吸收过程已经开始
D.药物的吸收速度与消除速度达到平衡
E.药物在体内的分布达到平衡