试述烧伤后防治全身性感染的主要措施。

某人欲划船渡过一条宽100 m的河，船相对静水速度="5" m/s，水流速度="3" m/s，则

A．过河最短时间为20 s

B．过河最短时间为25 s

C．过河位移最短所用的时间是25 s

D．过河位移最短所用的时间是20 s

与新生儿喂养不相符的方法是（）。

A.首选母乳

B.按需哺喂

C.生后30min哺喂

D.待母亲 * * 分泌乳汁后再哺喂

E.喂乳后应将小儿竖抱拍背

中小企业“新模式”要求企业连续经营年限年以（）上。

A、1年

B、2年

C、3年

D、4年

城市排水工程总体规划的主要内容包括( )。
①确定排水制度；②提出污水综合利用措施，③按照确定的排水体制划分排水系统；④确定排水干管、渠的走向和出口位置；⑤划分排水区域，估算雨水、污水总量，制定不同的污水排放标准，⑥进行排水管、渠系统规划布局，确定雨、污水主要泵站数量、位置，以及水闸位置；⑦确定污水处理厂数量、分布、规划、规模、处理等级以及用地范围；⑧确定排水干管的位置、走向、服务范围、控制管径以及主要工程设施的位置和用地范围

A．①②③④⑤⑥⑦⑧

B．①②③④⑤⑥⑦

C．①②④⑤⑥⑦

D．①②③⑥⑦⑧

A total of 4.6 million digital televisions have been sold, and the sales of HDTV sets have quadrupled since last year. Consumers have bought HDTVs to play their DVDs and to have clearer pictures and wide screens. Only a small percentage of the people who have purchased HDTVs, however, have actually hooked their TVs up to receive high-definition television digital signals. Perhaps television viewers are having trouble keeping up with the changes in technology. Even the manufacturers of HDTVs, like Mitsubishi, Thomson Multimedia, Sony, and Samsung seem to have a tough time learning how to make their sets work with the various digital TV formats because little standardization has been required or implemented in the industry.

Some of the HDTVs weigh over 200 lbs., and a variety of retailers offer a delivery service to the buyer’s home to help install the heavy sets. This is known as a white-glove service and usually comes with an extra fee. After HDTV purchasers get their sets home and hook them up, they will still need to work to get the digital signals to their systems. Most of the industry’s cable providers do not yet offer high~definition programing, and only about 15% of commercial television stations have switched over to even the lowest improved digital pictures. Worse yet, viewers may need to install antenna before they can even get the digital signals to their new HDTV sets. Another frustration for home-theater seekers is that the current HDTV sets allow owners only to watch high-definition programs, not to record them.

A majority of HDTV consumers could not enjoy high-quality digital pictures because ().

A. they did not tune in to the right channel

B. they did not install the system

C. the market retailers created the confusion on purpose

D. the manufacturers did not have a uniform standard for their sets