润滑脂有什么特点？

下列各项中，关于银行存款业务的表述中正确的是（）。

企业单位信用卡存款账户可以存取现金 

企业信用证保证金存款余额不可以转存其开户行结算户存款 

企业银行汇票存款的收款人不得将其收到的银行汇票背书转让 

企业外埠存款除采购人员可从中提取少量现金外，一律采用转账结算 

One of the most widely used routing protocols in IP networks is the Routing Information Protocol (RIP)．RIP is the canonical example of a routing protocol built on the (1) algorithm．Routing protocols in internet works differ slightly from the idealized graph model．In an internet work，the goal of the routers to forward (2) to various networks．

Routers running RIP send their advertisement about cost every (3) seconds．A router also sends an update message whenever an update from another router causes it to change its routing table．

Routing protocols use different techniques for assigning (4) to individual networks．Further, each routing protocol forms a metric aggregation in a different way．RIP takes the simplest approach，with all link costs being equal (5) ．Thus it always tries to find the minimum hop route．Valid distances are 1 through 15．This also limits RIP to runing on fairly small networks．

4（）

A．respond time

B．utilization

C．links

D．metrics

研究客户心理特征的Aspell分析模型将人的性格分为( )种类型。

A．4

B．6

C．8

D．9

NaOH是强碱，其PH值（）。

A、小于7

B、等于7

C、大于7

D、无法确定

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