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问题 单项选择题

地籍铅笔原图的基本精度要求是，相邻界址点间距、界址点与邻近地物点关系距离的中误差不得大于图上（）毫米（mm）。

A.±0.4

B.±0.3

C.±0.5

D.±0.7

答案

参考答案：B

单项选择题

For each blank, choose the best answer from the four choices and write down on the answer sheet.

(1) is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.

(2) is a professional organization of individuals in multiple professions which focuses on effort on lower-layer protocols.

(3) functions with two layers of protocols. It can connect networks of different speeds and can be adapted to an environment as it expands.

(4) is the popular LAN developed under the direction of the IEEE 802.5.

(5) is the popular backbone technology for transmitting information at high speed with a high level of fault tolerance which is developed under the direction of ANSI.

5（）

A．X.25

B．ATM

C．FDDI

D．SMDS
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单项选择题

______是我国外贸法制建设的基本法，是整个外贸制度的核心。

A．《国际商法》
B．《对外贸易法》
C．《专利法》
D．《海关法》
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