A、0
B、<img src="http://wximg.233.com/attached/image/20150823/20150823105238_3700.png" height="29" width="57" />
C、<img src="http://wximg.233.com/attached/image/20150823/20150823105243_8861.png" height="28" width="64" />
D、<img src="http://wximg.233.com/attached/image/20150823/20150823105310_7164.png" height="28" width="30" />
高等数学二