ÌâÄ¿ÄÚÈÝ
17£®Ò»Ã¶Ò»ÔªÓ²±ÒÏòÉÏÅ×£¬ÂäϺ󣬡°1Ôª¡±³¯ÉϵĿÉÄÜÐÔÊÇ£¨¡¡¡¡£©| A£® | 1 | B£® | 0 | C£® | $\frac{1}{2}$ |
·ÖÎö ͶÖÀһöһԪӲ±Ò£¬Á½Ã泯ÉϵĿÉÄÜÐÔÊÇÏàͬµÄ£¬¶¼ÊÇ$\frac{1}{2}$£®
½â´ð ½â£ºÍ¶ÖÀһöһԪӲ±Ò£¬ÂäϺ󣬡°1Ôª¡±³¯ÉϵĿÉÄÜÐÔÊÇ$\frac{1}{2}$£»
¹ÊÑ¡£ºC£®
µãÆÀ ½â´ð´ËÌâÓ¦¸ù¾Ý¿ÉÄÜÐÔµÄÇ󷨣º¼´ÇóÒ»¸öÊýÊÇÁíÒ»¸öÊýµÄ¼¸·ÖÖ®¼¸Óóý·¨½â´ð£¬½ø¶øµÃ³ö½áÂÛ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿