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【单选题】
患儿,男,8岁。以咳嗽,咳痰就诊,咽红,查血象白细胞高,诊断为呼吸道感染,选用阿奇霉素治疗。为了维持药物的药效浓度,应该A.
服用加倍剂量的维持剂量
B.
每四小时服药一次
C.
每天三次或三次以上给药
D.
服用负荷剂量
E.
根据消除半衰期制定给药方案
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举一反三
【单选题】In which of the following activities does the teacher mainly play the Tole of a prompter?
A.
Organize the students to do activities by giving instructions.
B.
Change the pace of the class by various means.
C.
Elicit ideas from students.
【单选题】以下银量法测定需采用返滴定方式的是( )。
A.
莫尔法测C1-
B.
吸附指示剂法测C1-
C.
佛尔哈德法测C1-
D.
AgNO3滴定C1-(生成Ag(CN)2-2指示终点)
【单选题】佛尔哈德法测定银离子以（ ）为指示剂。A.铬酸钾； B.铁铵矾； C.荧光黄；D.淀粉
A.
佛尔哈德法测定银离子的基本原理
B.
佛尔哈德法测定银离子的基本原理
C.
佛尔哈德法测定银离子的基本原理
D.
佛尔哈德法测定银离子的基本原理
【单选题】Main Functions of Computer Operating System is______.
A.
Manage the hardware and software resources of computer system to give full play to the efficiency of computer resources and provide a good operating environment for other software.
B.
Translate the program written in advanced programming language and assembly language into the target program that can be directly executed by computer hardware, and provide a good software development environment for users.
C.
E ffective ly m anage all kinds of computer files and efficient ly process computer hardware
D.
Provide users with convenient operation and use of computers
【简答题】请将下列三音节速写符还原成词语。 1、组x 2、教j 3、自h 4、实y 5、教z 6、 7、保p 8、博g
【单选题】The costs of a Computer-Based Recording System are lower than that of a component-based Hardware System.
A.
Y
B.
N
C.
NG
【简答题】佛尔哈德法测定Ag+ 时，滴定剂是
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