下列各句中，没有语病的一句是（） A．我离开母校已经整整五年了，也没能回去看看，

小欣打开冰箱门，发现冷冻室的侧壁上有很多霜，这是水蒸气______（填物态变化的名称）形成的，这个过程中水蒸气______（填“吸收”或“放出”）热量．当他拿起湿抹布去擦时，抹布却粘在了侧壁上，这是因为发生了______（填物态变化的名称）现象．

下列哪项不是法洛四联征的病理生理改变

A．双侧心室峰压相等

B．继发性红细胞增多

C．肺循环血量增多

D．右心室功能不全

E．肺的侧支循环增多

可以计入证券投资基金费用的有( )。

A．基金管理费

B．基金认购费

C．基金上市年费

D．证券交易费用

国家建立和完善网络安全标准包括国家标准、行业标准、协会标准。

Routing protocols use different techniques for assigning (37) 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 (38) Some routing protocols can even use multiple paths when paths have an unequal cost. In either case, load (39) 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 (40) across the possible routes in a manner proportional to the route metrics. Per-destination load balancing distributes packets across the possible routes based on (41)

39（）

A.bracketing 

B.balancing 

C.downloading 

D.transmitting