问题
多项选择题
《福建省市政工程施工技术文件管理规程》规定：板式支座、盆式橡胶支座、球形支座检验报告中主要检验指标不得缺漏，盆式橡胶支座主要检验指标为：（）。球形支座主要检验指标为：支座竖向承载力试验、支座水平承载力试验、支座摩擦系数试验、支座转动性能试验。
A、支座摩擦系数
B、支座转动性能
C、竖向承载力
D、支座水平承载力试验
答案
参考答案：A, B, C
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《福建省市政工程施工技术文件管理规程》规定：板式支座、盆式橡胶支座、球形支座检验报告中主要检验指标不得缺漏，盆式橡胶支座主要检验指标为：（）。球形支座主要检验指标为：支座竖向承载力试验、支座水平承载力试验、支座摩擦系数试验、支座转动性能试验。
A、支座摩擦系数
B、支座转动性能
C、竖向承载力
D、支座水平承载力试验
参考答案：A, B, C
| A transport layer protocol has several responsibilities. One is to create a process-to-process (program-to-program) communication; TCP uses port (71) to accomplish this. Another responsibility of a transport layer protocol is to create a (72) and error-control mechanism at the transport level. TCP uses a sliding (73) protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve (74) control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends (75) of data to the transport layer. It is the responsibility of the transport layer at the sending station to make a connection with the receiver. |
A．ports
B．streams
C．packets
D．cells