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问题 单项选择题

Internet是一种电脑间及电脑网络间的连接关系，这种连接关系是靠两个支柱来维系的，即（）协议和资源共享原则。

A.TCP/IP

B.IPX

C.NetWare

答案

参考答案：A

选择题

某元素二价阴离子核外有18个电子，质量数为32，该元素原子的原子核中的中子数[ ]

A．12

B．14

C．16

D．18

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单项选择题

The external auditing shall be conducted by the Customs over the following enterprises and other organizations

A．Enterprises and other organizations engaged in foreign trade only

B．Enterprises and other organizations engaged in domestic trade only

C．Enterprises engaged in the business of inward process only

D．Both A and C
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