目前使用的圣垂变频控制柜的输入电压为（）V。A.220 B.110 C.380 D.

Routing protocols use different techniques for assigning (71) to individual networks. Further, each routing protocol forms a metric aggregation in a different way. Most routing protocols can use multiple paths if the paths have an equal (72) Some routing protocols can even use multiple paths when paths have an unequal cost. In either case, load (73) can improve overall allocation of network bandwidth. When multiple paths are used, there are several ways to distribute the packets. The two most common mechanisms are per-packet load balancing and per-destination load balancing. Per-packet load balancing distributes the (74) across the possible routes in a manner proportional to the route metrics. Per-destination load balancing distributes packets across the possible routes based on (75)

A．user

B．distance

C．entity

D．cost

补全对话。

S: Hello!Tony.It's Saturday today.1. _____are you going to do? 

T: I'm going to a Taijiquan class. 

S: 2._____and 3._____? 

T: 4._____the afternoon 5._____Garden Hotel.What about you? 

S: have nothing to do in the afternoon.But I want to see Lion King in the evening.

     6._____you 7._____ 8._____go with me?

T: Lion King?It's my favourite.That's a good idea.What about tomorrow?

S:  9._____go to10._____football tomorrow.

T: OK.See you then.

S: See you.

毛 * * 说：“没有调查，就没有发言权。”江 * * 说：“没有调查，就没有决策权。”胡 * * 说：“调查研究是我们的谋事之基、成事之道。”习 * * 说：“调查研究不能走过场。”这说明，决策机关要保证决策的科学性，前提是

A．听取专家的意见，集中学者的智慧

B．保证公民对政府决策的知情权和监督权

C．拓宽民意反映渠道，广泛了解社情民意

D．把人民群众的直接利益作为决策的出发点和立足点

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