对于现价为12元的某一标的证券，其行权价格为10元、只有1天到期的认购期权权利金价格为2.15元，则该认购期权合约的Delta值大致为（）。
A. 0.52
B. -0.99
C. 0.12
D. 0.98
查看答案
Your database instance is running.You are not able to access Oracle Enterprise Manager Database Control because the listener is not started.Which tool or utility would you use to start the listener?（）
A. Oracle Net Manager
B. Listener Control utility
C. Database Configuration Assistant
D. Oracle Net Configuration Assistant
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