ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÈçͼËùʾÊÇÎÒ¹úÑÐÖƵĴó¿Í»úC919£¬¼¼ÊõÒÑ´ïµ½¹ú¼ÊÏȽøˮƽ£¬ÒíÔØ´ï500ǧ¿Ë/Ã×2£¨ÒíÔØÊÇÖ¸·É»úµÄ×î´óÆð·ÉÖÊÁ¿Óë»úÒíÃæ»ýµÄ±ÈÖµ£©£¬ÒíÕ¹£¨·É»úµÄ×î´ó¿í¶È£©Ô¼Îª36Ãס£»ú²ÕÄÚ¸²ÓÐÒ»²ã¸ß¿×ÂÊ¡°³¬Ï¸º½¿Õ¼¶²£Á§ÃÞ¡±£¬Äܺܺõر£ÎÂÓëÎüÊÕÔëÒô£¬1Ã×3µÄÖÊÁ¿Îª5ǧ¿Ë¡£Ï±íÊÇ·É»úµÄ²¿·Ö¼¼Êõ²ÎÊý¡£×î´óÆð·ÉÖÊÁ¿ 72.5¶Ö¿Í²ÕÄÚÆøѹ8.0¡Á104ÅÁѲº½ËÙ¶È920ǧÃ×/ʱ·¢¶¯»úѲº½ÍÆÁ¦3.6¡Á104Å£¡£
£¨1£©·É»úÔÚÆøѹΪ2.5¡Á104ÅÁ×óÓÒµÄÍòÃ׸߿Õʱ£¬»úÌå1Ã×2Ãæ»ýÉϳÐÊÜÄÚÍâÆøÌåµÄѹÁ¦²îԼΪ_____Å££¬·½ÏòÖ¸Ïò_____£¨Ñ¡Ìî¡°²ÕÄÚ¡±»ò¡°²ÕÍ⡱£©¡£
£¨2£©¹ØÓÚ¿Í»úC919£¬ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ_____¡£
A ËùÓòÄÁÏ¡°³¬Ï¸º½¿Õ¼¶²£Á§ÃÞ¡±µÄÃܶȱÈË®´ó
B ¸Ã·É»úÔÚ¿ÕÖÐˮƽѲº½Ê±£¬·¢¶¯»úµÄ¹¦ÂÊԼΪ9¡Á106ÍßÌØ
C ¸Ã·É»ú»úÒíÓë»úÉíÁ¬½Ó´¦µÄ¿í¶ÈԼΪ3Ã×
¡¾´ð°¸¡¿ 6¡Á104 ²ÕÍâ B
¡¾½âÎö¡¿£¨1£©Ñ¹Á¦²îΪ£º£»
ÄÚ²¿µÄѹǿ´ó£¬ËùÒÔѹÁ¦²îµÄ·½ÏòÏòÍ⣻
£¨2£©A ËùÓòÄÁÏ¡°³¬Ï¸º½¿Õ¼¶²£Á§ÃÞ¡±µÄÃܶÈΪ5kg/m3±ÈˮСµÃ¶à£»
B ¸Ã·É»úÔÚ¿ÕÖÐˮƽѲº½Ê±£¬·¢¶¯»úµÄ¹¦ÂÊԼΪ£º
£¬¹ÊBÕýÈ·£»
C ·É»úµÄÖÊÁ¿£º
»úÒíÃæ»ý£º
¸Ã·É»ú»úÒíÓë»úÉíÁ¬½Ó´¦µÄ¿í¶È×îСԼΪ£º£¬¹ÊC²»·ûºÏʵ¼Ê¡£