常用锥表锪钻的锥角是（）。
A.45°
B.60°
C.75°
D.90°
参考答案：D
He suddenly remembered that ___at home.
A．he forgot his schoolbag
B．he left his schoolbag
C．his schoolbag had been forgotten
D．his schoolbag had been left
主承销商应当在超额配售选择权行使完成后的（）个工作日内，通知相关银行，将应付资金支付给发行人。
A．2
B．3
C．5
D．7
