根据《中国药典》等标准规定的处方，将药物加工制成具有一定规格的制品，称为（） A.制

在一定时期现金需求总量一定的情况下，同现金持有余额成反比的是( )。

A．转换成本

B．机会成本

C．持有成本

D．管理费用

有关林可霉素的叙述不正确的是()

A．主要用于革兰阳性球菌感染、骨髓炎和厌氧菌感染

B．易引起难辨梭菌假膜性肠炎，易透过胎盘

C．肠球菌及需氧革兰阴性菌耐药

D．主要经肾脏排泄

E．不可以快速静脉注射

Mannis Corporation’s archival records are stored in an obsolete format that is accessible only by its current computer system; thus they are inaccessible when that system is not functioning properly. In order to avoid the possibility of losing access to their archival records in the case of computer malfunction, Mannis plans to replace its current computer system with a new system that stores records in a format that is accessible to several different systems.
The answer to which of the following questions would be most helpful in evaluating the effectiveness of the plan as a means of retaining access to the archival records

A．Will the new computer system require fewer operators than the current system requires

B．Has Mannis Corporation always stored its archival records in a computerized format

C．Will the new computer system that Mannis plans ensure greater security for the records stored than does Mannis’ current system

D．Will Mannis’ current collection of archival records be readily transferable to the new computer system

E．(E) Will the new computer system be able to perform many more tasks than the current system is able to perform

在判断因果联系的标准中，存在剂量-反应关系表明

A．联系的强度不明显

B．随着暴露剂量增加(或降低)，联系强度也随之增大(或降低)

C．疾病的患病率高

D．疾病的发病率高

E．因果之间的联系存在许多偏倚