题目内容
HDW是反映红细胞内血红蛋白含量异质性的参数。
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A local telephone directory is sometimes called the White Pages. This directory provides an alphabetic listing of names and telephone numbers and other telephone reference information. The front pages usually contain information about area codes; billing; customer service; directory assistance (帮助); local, long-distance, and international calls; time zones; rates; emergency numbers; and other items relating to telephone use.The next section of the telephone directory typically contains the residence listings, or entries of community residents. The third section contains business listings or entries of local business and organizations. In some less populated (人口不稠密的) or rural areas, the residence and business listings may be combined in one section.Some local directories contain listings of local, state and federal (联邦的) government offices and agencies. These listings might be united into the business listing section, or they may be in a separate section of the phone book. These government listings typically are arranged by the name of the state government and then by departments or agencies.Local Telephone DirectoriesAnother name:(1)_________Arrangement of its contents:Listing of names and telephone numbers: given in an (2) _________orderArea codes and other useful information: contained in the(3) _________Residence listings: provided in the(4) _________section of the directoryGovernment listings: given either in the business listing section or in a (5) _________
单相半波可控整流电阻性负载电路中，晶闸管控制角α的最大移相范围是（）。
单相半波可控整流电感负载接续流二极管时，导通角θ（）。
网络经济依然是市场经济，因此市场机制依然是网络经济最基本的调节机制。
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