ÌâÄ¿ÄÚÈÝ
ÏÂÁÐʵÑéÊÔ¼ÁµÄʹÓÃÕýÈ·µÄÊÇ£¨¡¡ £©
A£®¼ø¶¨ÂóÑ¿ÌÇÊÇ·ñΪ»¹ÔÌÇ£¬Ð轫0.1 g¡¤mL£1µÄNaOHÈÜÒºÓë0.01 g¡¤mL£1 CuSO4ÈÜÒºµÈÁ¿»ìºÏ¾ùÔȺóʹÓÃ
B£®¼ø¶¨´ó¶¹ÖÖ×ÓÊÇ·ñº¬Óе°°×ÖÊ£¬Ð轫0.1 g¡¤mL£1µÄNaOHÈÜÒºÓëÉÙÁ¿0.01 g¡¤mL£1CuSO4ÈÜÒº»ìºÏ¾ùÔȺóʹÓÃ
C£®¹Û²ìDNAÔÚϸ°ûÖеķֲ¼£¬Ë®½âºÍȾɫ·Ö±ðÓÃ8%µÄÑÎËá¡¢¼×»ùÂÌ
D£®¼ø¶¨Ä³»ÆÉ«ÒºÌåÖÐÊÇ·ñº¬ÓÐÖ¬·¾£¬ÐëÓÃËÕµ¤¢óȾҺ
C
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿