热电阻温度计的测温原理是导体和半导体材料的（）和温度有关。
A.电阻
B.电阻率
C.电导率
D.长度
参考答案：C
设计合同示范文本规定，设计人的基本责任是( )。
A．保证设计质量B．完成施工图设计C．配合施工D．保护发包人的知识产权
In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
A socket is basically an end point of a communication link between two applications. Sockets that extend over a network connect two or more applications running on (31) computers attached to the net-work. A socket (32) two addresses: (33) . Sockets provide a (34) communication channel between one or more systems. There are (35) sockets separately using TCP and UDP.
（31）是（）
A.unique
B.separate
C.same
D.dependent
