某材料吸水饱和后的质量为20Kg，烘干到恒重时，质量为16Kg，则材料的（） ["质量吸水率为25%","体积吸水率为25%","体积吸水率为20%","质量吸水率为20%"]
秦在统一前，巨贾吕不韦曾位至相国；统一后，“徙天下富豪于咸阳十二万户”，发“贾人略取陆梁地（泛指桂林、象郡、南海等岭南边远蛮荒地区）”。这一现象说明秦朝（）。 ["小农经济形成","工商食官出现","中央集权加强","江南得到开发"]
For a given ServletResponse response， which retrieves an object for writing binary data？（） [" response.getWriter（）"," response.getOutputStream（）"," response.getOutputWriter（）"," response.getWriter（）.getOutputSTream（）"," response.getWriter（Writer.OUTPUT_BINARY）"]
You work as an administrator at ABC.com. The ABC.com network consists of a single domain named ABC.com. All servers in the ABC.com domain， including domain controllers， have Windows Server 2012 R2 installed.You have installed the DNS Server Role on a ABC.com server， named ABC-SR13. ABC.com’s workstations make use of a web proxy to access the Internet， and refer to ABC-SR13 as a primaryDNS server.You have been instructed to make sure that Internet host names for ABC.com’s workstations are not resolved by ABC-SR13. Which of the following actions should you take？（） ["You should consider configuring a primary zone on ABC-SR13.","You should consider configuring a secondary zone on ABC-SR13.","You should consider configuring a reverse lookup zone on ABC-SR13.","You should consider configuring a forward lookup zone on ABC-SR13."]
情爱与性爱的结合属于（） ["健康的性动机","健康的性意识","健康的性情感","正确的性观念"]
（）玉米角质胚乳较多，储藏性能好。
