气瓶充装后应检查是否出现鼓包变形或（）等严重缺陷.
A、泄漏
B、潮湿
C、结霜
参考答案：A
影响期权价值的主要因素有（）。
A.标的资产市价
B.执行价格
C.到期期限
D.标的资产价格的波动率
According to the recent survey, cancer is the leading cause of death among young adults in this area, ____
woman.[ ]
A. apparently
B. especially
C. exactly
D. probably
