出自我国古医书《古今医统》的内容是（）。 A."启我爱医术，复_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题 B型题

出自我国古医书《古今医统》的内容是（）。

A."启我爱医术，复爱世间人，愿绝名利心，尽力为病人。"

B."医本活人，学之不精，反为夭折。"

C."先知儒理，然后方知医理……。"

D."我愿尽余之能力及判断力所及，遵守为病家谋利益之信条。"

E."留神医药，精通方术……以善其生。"

答案

参考答案：B

单项选择题

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.

According to the passage, which of the following offers most of the HDTV programmes so far

A．Retailer delivery services.

B．Cable providers.

C．Commercial television stations.

D．HDTV set manufacturers.

问答题简答题

混炼胶的特性。