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问题 单项选择题

在施测MMPI测验时，如受测者报告有些想法现在没有了，主测者应当告之他（）。

A.以从前的情况为准

B.以现在的情况为准

C.根据具体的情况选择

D.以从前或现在的情况为准都可以

答案

参考答案：B

单项选择题

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (11) or hubs, which just move the bits from one network to an identical network. One layer up we find bridges and switches, which operate at data link layer. They can accept (12) ,examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have (13) network layer, the router may be able to translate between the packer formats. In the transport layer we find transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message (14) . As an example, gateways between Internet e-mail and X.400 e-mail must (15) the e-mail message and change various header fields.

A．frames

B．packets

C．packages

D．cells
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单项选择题

混合功能氧化酶主要存在于

A．内质网

B．线粒体

C．细胞膜

D．溶酶体

E．高尔基体
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