湖北省黄冈市中考物理模拟试题参考答案.doc

2019年湖北省黄冈市中考物理模拟试题参考答案DIV.MyFav_1212388299091P.MsoNormal{TEXT-JUSTIFY:inter-ideograph;FONT-SIZE:10.5pt;MARGIN:0cm0cm0pt;FONT-FAMILY:"TimesNewRoman";TEXT-ALIGN:justify}DIV.MyFav_1212388299091LI.MsoNormal{TEXT-JUSTIFY:inter-ideograph;FONT-SIZE:10.5pt;MARGIN:0cm0cm0pt;FONT-FAMILY:"TimesNewRoman";TEXT-ALIGN:justify}DIV.MyFav_1212388299091DIV.MsoNormal{TEXT-JUSTIFY:inter-ideograph;FONT-SIZE:10.5pt;MARGIN:0cm0cm0pt;FONT-FAMILY:"TimesNewRoman";TEXT-ALIGN:justify}DIV.MyFav_1212388299091P.MsoFooter{FONT-SIZE:9pt;MARGIN:0cm0cm0pt;LAYOUT-GRID-MODE:char;FONT-FAMILY:"TimesNewRoman";TEXT-ALIGN:left}DIV.MyFav_1212388299091LI.MsoFooter{FONT-SIZE:9pt;MARGIN:0cm0cm0pt;LAYOUT-GRID-MODE:char;FONT-FAMILY:"TimesNewRoman";TEXT-ALIGN:left}DIV.MyFav_1212388299091DIV.MsoFooter{FONT-SIZE:9pt;MARGIN:0cm0cm0pt;LAYOUT-GRID-MODE:char;FONT-FAMILY:"TimesNewRoman";TEXT-ALIGN:left}DIV.MyFav_1212388299091P.MsoPlainText{TEXT-JUSTIFY:inter-ideograph;FONT-SIZE:10.5pt;MARGIN:0cm0cm0pt;FONT-FAMILY:宋体;TEXT-ALIGN:justify}DIV.MyFav_1212388299091LI.MsoPlainText{TEXT-JUSTIFY:inter-ideograph;FONT-SIZE:10.5pt;MARGIN:0cm0cm0pt;FONT-FAMILY:宋体;TEXT-ALIGN:justify}DIV.MyFav_1212388299091DIV.MsoPlainText{TEXT-JUSTIFY:inter-ideograph;FONT-SIZE:10.5pt;MARGIN:0cm0cm0pt;FONT-FAMILY:宋体;TEXT-ALIGN:justify}DIV.MyFav_1212388299091P{TEXT-JUSTIFY:inter-ideograph;FONT-SIZE:12pt;MARGIN:0cm0cm0pt;FONT-FAMILY:"TimesNewRoman";TEXT-ALIGN:justify}DIV.MyFav_1212388299091DIV.Section1{page:Section1}DIV.MyFav_1212388299091OL{MARGIN-BOTTOM:0cm}DIV.MyFav_1212388299091UL{MARGIN-BOTTOM:0cm}1．D2．C3．A4．D5．A6．A7．B8．C9．C10．B11．答：因为室内空气中含有大量的水蒸气由于水蒸气遇到温度较低的窗户会液化成小水滴而附在纸条上从而因潮湿而脱落所以不把纸条粘在室内的窗缝处。12．要点：（1）动能一定质量的水速度越大、动能就越大对外做功的本领就越大从而能切割坚硬的物体。（或：高速水流对被切割物体的压强很大从而能切割坚硬的物体。）（2）加入砂质磨料后水流的质量增大高速水流具有的动能就更大在流速相同的情况下对外做功的本领就更大从而切割能力大大提高。（或：加入砂质磨料后的高速水流对被切割物体的压强更大从而切割能力大大提高。）13．（1）尽可能地反射阳光；稳固油罐增大容积；（2）比热容；水蒸发吸热14