读漫画《挑好“小官”干好“大事”》。为挑好“小官”，必须[ ] ①增强选民的主

Flow control is a function that prevents network congestion by ensuring that (59) do not overwhelm (60) with data.

There are three commonly used methods for handling network congestion. (61) is used by network devices to temporarily store bursts of excess data in memory until they can be processed (62) are used by receiving devices to help prevent their buffers from overflowing. (63) is a flow-control scheme in which the source device requires an acknowledgment from the destination aider a certain number of packets have been transmitted.

60（）

A．transmitting devices

B．transmitted devices

C．receiving devices

D．received devices

胸部损伤后出现颈静脉怒张，奇脉，血压下降，脉压差变小，此时首先应想到

A．闭合性气胸

B．张力性气胸

C．外伤性气胸

D．外伤性血心包

E．创伤性窒息

利用封闭系统中的液体的静压能实现能量传递和转换的传动称（）。

A、机械传动

B、气压传动

C、电气传动

D、液压传动

单位银行结算账户一年内未发生交易，且出票人在民生银行已无债务的，经公司业务部门确认，书面通知出票人来行销户，自发出通知之日起（）天后，营业部门办理销户手续。

A.10天

B.20天

C.25天

D.30天