广告主题主要解决广告什么的问题，即广告卖点问题。

系统化的管理课程培训体系包括（）。

A.系统性的常规管理知识和技能培训

B.岗位管理知识培训

C.现代管理技能培训

D.管理人员心智能力培训

E.企业文化与精神培训

Mary sits _________ the classroom and I sit _________ her.

A．in the front of, in the front of

B．in front of, in front of

C．in the front of, in front of

D．in front of, in the front of

起套结束进入正常套丝时()。

A、要加大压力 

B、不要加压 

C、适当加压 

D、可随意加压

Traditional network layer packet forwarding relies on the information provided by network layer （） protocols, or static routing, to make an independent （） decisions at each hop within the network. The forwarding （） is based solely on the destination（） IP address. All packets for the same destination follow the same path across the network if no other equal-cost paths exist. Whenever a router has two equal-cost （） toward a destination, the packets toward the destination might take one or both of them, resulting in some degree of load sharing.

Traditional network layer packet forwarding relies on the information provided by network layer routing protocols, or static routing,to make an independent （） decisions at each hop within the network

A．forwarding

B．connecting

C．routing

D．killing

铜管直径D=10mm，流量Q=4.71L/min，在10m管长上的水头损失为1.918m，则其沿程损失系数是（）。

A.0.03

B.0.0376

C.0.025

D.0.017