ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÀûÓýðÊô¾§¸ñ£¨´óСԼ10-9 m£©×÷ΪÕÏ°Îï¹Û²ìµç×ÓµÄÑÜÉäͼÑù£¬·½·¨ÊÇÈõç×ÓÊøͨ¹ýµç³¡¼ÓËÙºó£¬ÕÕÉäµ½½ðÊô¾§¸ñÉÏ£¬´Ó¶øµÃµ½µç×ÓµÄÑÜÉäͼÑù¡£ÒÑÖªµç×ÓÖÊÁ¿Îªm£¬µçºÉÁ¿Îªe£¬³õËÙ¶ÈΪ0£¬¼ÓËÙµçѹΪU£¬ÆÕÀʿ˳£Á¿Îªh£¬ÔòÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ
A.¸ÃʵÑé˵Ã÷Á˵ç×Ó¾ßÓÐÁ£×ÓÐÔ
B.ʵÑéÖеç×ÓÊøµÄµÂ²¼ÂÞÒⲨµÄ²¨³¤Îª
C.¼ÓËÙµçѹUÔ½´ó£¬µç×ÓµÄÑÜÉäÏÖÏóÔ½Ã÷ÏÔ
D.ÈôÓÃÏàͬ¶¯ÄܵÄÖÊ×ÓÌæ´úµç×Ó£¬ÑÜÉäÏÖÏ󽫲»Ã÷ÏÔ
¡¾´ð°¸¡¿D
¡¾½âÎö¡¿
A.¸ÃʵÑé¹Û²ìµç×ÓµÄÑÜÉäͼÑù£¬ÑÜÉäÏÖÏó˵Ã÷Á£×ӵIJ¨¶¯ÐÔ£¬¹ÊA´íÎó£»
B.µç×ÓÊøͨ¹ýµç³¡¼ÓËÙ£¬Óɶ¯Äܶ¨Àí¿ÉµÃ£º£¬µÃ£º
£¬Ôò¶¯Á¿
£¬ËùÒÔʵÑéÖеç×ÓÊøµÄµÂ²¼ÂÞÒⲨµÄ²¨³¤Îª£º
£¬
¹ÊB´íÎó£»
C.ÓÉB¿ÉÖª£º¼ÓËÙµçѹUÔ½´ó£¬²¨³¤Ô½Ð¡£¬ÑÜÉäÏÖÏóÔ½²»Ã÷ÏÔ£¬¹ÊC´íÎó£»
D.ÈôÓÃÏàͬ¶¯ÄܵÄÖÊ×ÓÌæ´úµç×Ó£¬ÖÊÁ¿±ä´ó£¬ÔòÁ£×Ó¶¯Á¿±ä´ó£¬¹ÊµÂ²¼
ÂÞÒⲨµÄ²¨³¤±äС£¬¹ÊÑÜÉäÏÖÏ󽫲»Ã÷ÏÔ£¬¹ÊDÕýÈ·¡£
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿