ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿¹ú¼Ò±ê×¼A4´òӡֽΪÿ°ü500ÕÅ£¬Ð¡»Û¼ÒÀïÐÂÂòµÃÁ¦ÅÆÒ»°ü´òÓ¡Ö½£¬ËýÏëÁ·Ï°¿Ì¶È³ßµÄʹÓ㬲â³öÁË´òÓ¡Ö½µÄ³¤ºÍ¿í·Ö±ðΪ297mmºÍ210mm£¬×ܺñ¶ÈΪ 5cm£¬ÀûÓÃÎïÀí¿ÎÉÏѧ¹ýµÄÀÛ»ý·¨Ëã³öÒ»ÕÅÖ½µÄºñ¶ÈΪ________cm(Íâ°ü×°ºñ¶ÈºöÂÔ²»¼Æ)£®ÔÚ²âÁ¿¹ý³ÌÖУ¬Ëý·¢ÏÖÍâ°ü×°Éϱê×Å80g/m2£¬¿ªÊ¼ËýÒÔΪÕâ¾ÍÊÇÖ½µÄÃܶȣ¬µ«ºóÀ´¾Ñ¯ÎʲÅÖªµÀ£¬ÕâÊÇÿÕÅ´òӡֽÿƽ·½Ã×µÄÖÊÁ¿ÊÇ80gµÄÒâ˼£®ÀûÓÃÒÔÉÏÐÅÏ¢Äã°ïС»ÛËã³ö´òÓ¡Ö½µÄÃܶÈΪ________ kg/m3.
¡¾´ð°¸¡¿ 0.01 800
¡¾½âÎö¡¿£¨1£©Ò»ÕÅÖ½µÄºñ¶È£º £»
£¨2£©1m2Ö½µÄÌå»ý£ºV=Sh=1¡Á104cm2¡Á0.01cm=100cm3£¬
ÓÉ80g/m2¿ÉÖª£¬1m2Ö½µÄÖÊÁ¿m=80g£¬
ÔòÕâ°üÖ½µÄÃܶȣº £®
¹Ê´ð°¸Îª£º0.01£»0.8¡Á103£®
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿