Znn3bq.jpeg
ÉÇÍ·´óѧº£Ñó¿ÆÑ§½ÓÊܵ÷¼Á
²é¿´: 397  |  »Ø¸´: 5
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£
¡¾Óн±½»Á÷¡¿»ý¼«»Ø¸´±¾Ìû×Ó£¬²ÎÓë½»Á÷£¬¾ÍÓлú»á·ÖµÃ×÷Õß dongchangming µÄ 5 ¸ö½ð±Ò

dongchangming

[½»Á÷] Ò»¸öÈõÈõµÄÎÊÌ⣬Çë´ó¼Ò°ïæ¿´Ò»ÏÂ

Arsenic and phosphorus are members of the same family and have similar chemical properties.Why is arsenic harmful if ingested ,whereas phosphorus is not?(better in English )
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

nmliujianguo

ľ³æ (ÖøÃûдÊÖ)

¡ï
gshsheng(½ð±Ò+1,VIP+0):ºÃÈÈÐİ¡
ÉéºÍÁ×ÊÇͬһÖ÷×åµÄÔªËØ£¬ÓÐÏàËÆµÄ»¯Ñ§ÐÔÖÊ¡£ÎªÊ²Ã´ÉãÈë΢Á¿ÉéÓк¦£¿¶øÉãÈë΢Á¿Á×ÎÞº¦ÄÄ£¿
2Â¥2008-01-05 11:38:09
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

xuzhenxxzz

½ð³æ (СÓÐÃûÆø)

¡ï
gshsheng(½ð±Ò+1,VIP+0):thanks
ÕâÊÇÒ»¸öÏ޶ȵÄÎÊÌâ
³¬¹ýÏÞ¶È£¬¾ÍÊÇÓк¦µÄ£¬ÔÚÏÞ¶ÈÖ®ÄÚ£¬¾ÍÊÇÓÐÒæµÄ¡£
ÔÚºÚÒ¹¹Âµ¥µÄÒ»µã΢¹â,²»ÔÚºõË­¿´µ½ÎÒÔÚ·¢ÁÁ.
3Â¥2008-01-06 09:46:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yeda

½ð³æ (ÕýʽдÊÖ)

2Â¥·­ÒëÁË£¬3Â¥»Ø´ðÁË£¬ÎÒ¿´¹ýÁË¡­¡­
°®³æ
4Â¥2008-01-08 15:57:03
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

johnteller875

½ð³æ (СÓÐÃûÆø)

°×Á×Ò»Ñù¾ç¶¾~
5Â¥2008-01-08 20:14:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

xjyuefan

Ìú¸Ëľ³æ (ÕýʽдÊÖ)

¸úÔªËØÐÎ̬µÄÈܽâÇé¿öÒ²ÊÇÓйص쬾ÍÏñ4¥˵µÄ£¬°×Á×µÄÈܽâÐԺ㬷´Ó¦»îÐԸߣ¬½á¹û»¹ÊǾ綾
6Â¥2008-02-11 12:38:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ dongchangming µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çóµ÷¼Á +12 ºÎÆøÕý 2026-04-13 13/650 2026-04-14 14:47 by zs92450
[¿¼ÑÐ] 297Çóµ÷¼Á +23 ORCHID1 2026-04-10 26/1300 2026-04-14 13:52 by ³ÂƤƤ
[¿¼ÑÐ] 291 Çóµ÷¼Á +36 »¯¹¤2026½ì±ÏÒµÉ 2026-04-09 36/1800 2026-04-14 13:20 by µÚÒ»ÌìºÃ
[¿¼ÑÐ] 245Çóµ÷¼Á +6 ±ùÌÇéÙ?ÆûË® 2026-04-13 10/500 2026-04-14 10:49 by jyl0317
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÄÏÀí¹¤´óѧ331·Ö²ÄÁÏÇóµ÷¼Á +10 ÌìÏÂww 2026-04-09 11/550 2026-04-13 23:25 by pies112
[»ù½ðÉêÇë] Óб¬ÁÏ£¬Ò»¸öÇàÄê½ÌʦÂô·¿µÃ400Íò£¬È»ºó»»ÁËÒ»¸öËÄÇàñ×Ó +11 babu2015 2026-04-08 11/550 2026-04-13 16:33 by probebill
[¿¼ÑÐ] 290Çóµ÷¼Á +18 ¿Â»´È» 2026-04-12 20/1000 2026-04-13 12:56 by cyh¡ª315
[¿¼ÑÐ] Çóµ÷¼Á +16 ÕÅ·¬ÇѲ»³´µ° 2026-04-10 17/850 2026-04-12 13:58 by °¾Ò¹³É£¡
[¿¼ÑÐ] Ò»Ö¾Ô¸Ö£ÖÝ´óѧ 22408 305·ÖÇóµ÷¼Á +5 °²Ð¡Âúzzz 2026-04-08 5/250 2026-04-12 00:41 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 267Çóµ÷¼Á +8 ÔÙæҲҪ³Ô·¹°¡ 2026-04-09 8/400 2026-04-11 21:42 by cfdbai
[¿¼ÑÐ] 269Çóµ÷¼Á +11 °¡°¡ÎÒÎÒ 2026-04-07 11/550 2026-04-11 16:45 by vgtyfty
[¿¼ÑÐ] ũѧ0904 312Çóµ÷¼Á +6 Say Never 2026-04-10 6/300 2026-04-11 10:33 by wwj2530616
[¿¼ÑÐ] 085410-273Çóµ÷¼Á +6 X1999 2026-04-10 6/300 2026-04-11 10:32 by Delta2012
[¿¼ÑÐ] 293Çóµ÷¼Á +6 ÓÂÔ¶¿â°®314 2026-04-08 6/300 2026-04-11 10:08 by zhq0425
[¿¼ÑÐ] Ò»Ö¾Ô¸¶«±±´óѧ¿ØÖƹ¤³Ì085406Êý¶þÓ¢¶þ385£¬Çóµ÷¼Á +8 Ezra_Zhang 2026-04-09 8/400 2026-04-11 09:15 by Öí»á·É
[¿¼ÑÐ] 346£¬¹¤¿Æ0854Çóµ÷¼Á£¬×¨Ë¶ +7 moser233 2026-04-10 8/400 2026-04-11 08:52 by Öí»á·É
[¿¼ÑÐ] 284Çóµ÷¼Á +12 archer.. 2026-04-10 13/650 2026-04-11 08:44 by zhq0425
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷ÄÏ´óѧÉúÎïѧѧ˶344 ÇóÉúÎïѧÏà¹Øµ÷¼Á/ÉúÎïÓëÒ½Ò© +7 ³¬È˲»»á·É@ 2026-04-08 7/350 2026-04-09 09:35 by gong120082
[¿¼ÑÐ] Çóµ÷¼Á +13 Æâluck 2026-04-07 13/650 2026-04-08 22:46 by Öí»á·É
[¿¼ÑÐ] 22408 266Çóµ÷¼Á +11 masss11222 2026-04-07 14/700 2026-04-08 11:06 by yulian1987
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û