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问题 多项选择题

抗菌药物治疗方案应综合患者病情、病原菌种类及抗菌药物特点制订，包括（）

A、选用品种

B、剂量

C、给药次数

D、给药途径、疗程

E、联合用药

答案

参考答案：A, B, C, D, E

选择题

下列关于自感的说法中，正确的是（　　）

A．自感是由于导体本身的电流发生变化而产生的电磁感应现象

B．线圈中自感电动势的方向总与引起自感的原电流的方向相反

C．线圈中产生自感电动势较大的，其自感系数也较大

D．加铁芯后线圈的自感系数比没有铁芯时要小
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单项选择题

Most IP layer-based proxy mechanisms, such as network address translation (NAT), only support uni-directional proxy, from the internal network to external network (the Internet). The proxy establishes the communication channel by (86) IP addresses. The IP addresses must be (87) . These proxy mechanisms prevent applications that must establish return data channels from establishing their data channels, such as, multimedia applications. IP layer-based proxy mechanisms need additional software (88) for each application that uses (89) channels. SOCKS identifies communication targets through domain names, overcoming the restriction of using private IP addresses. SOCKS can use domain names to establish communication between separate LANs, with (90) IP addresses.

（90）是（）

A.duplicating

B.crossing

C.overlapping

D.repeating
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