搜题请搜索小程序“爱下问搜题”
问题 单项选择题

碘量法或汞量法测定日-内酰胺类抗生素中某些药物含量时，首要的条件为

A．被测药物水解
B．被测药物氧化
C．被测药物溶解
D．精密称取一定量
E．被测药物能与碘或汞离子定量的反应

答案

参考答案：A

选择题

对下面句子中加粗的词语在句子中的含义理解不正确的一项是 [ ]

A．我赤裸裸来到这个世界，转眼间也将赤裸裸的回去吧？（没有在世界上留下什么东西）

B．我们倒看见有好多年纪轻轻的人，却已经成了老腐败，老顽固，甚至活的木乃伊。（在这里是比喻僵化的事物）  

C．有的人热衷于猎取恩宠荣禄，把自己的光阴牺牲在伺候权贵，谋求接见之中。（这里是讨好奉承的意思）   

D．这里窗明几净，空气清新，可供你舒适地潜心攻读，为你淘金提供了很好的条件。（这里是指用水洗的方法从沙里选出金子）

查看答案
单项选择题

Routing protocols use different techniques for assigning ______ to individual networks. Further, each routing protocol forms a metric aggregation in a different way. Most routing protocols can use multiple paths if the paths have an equal ______ . Some routing protocols can even use multiple paths when paths have an unequal cost. In either case, load ______ can improve overall allocation of network bandwidth. When multiple paths are used, there are several ways to distribute the packets. The two most common mechanisms are per-packet load balancing and per-destination load balancing. Per-packet load balancing distributes the ______ across the possible routes in a manner proportional to the route metrics. Per-destination load balancing distributes packets across the possible routes based on ______.

A. efficiency B. metrics C. utilization D. links
查看答案