国际经济联盟组织依照其经济结合的程度及相互依存的关系有（）。A、自由贸易区 B、关税同

红星玩具厂的每个包装盒最多可以装6 辆玩具小汽车，一个玩具商店一次性订购45 辆这种玩具小汽车，需要(    ) 个这种包装盒。

信息机的开通方式？

氯胺酮的禁忌证有（）。

A.哮喘

B.糖尿病

C.重症肌无力

D.精神病

E.血友病

发电机的短路特性曲线是一条（）线.

In October, James Knight owned stock in Valerio, Inc. , that was valued at $45 per share. At that time, Knight sold a call option on Valerio with an exercise price of $60 for $1.45. In December, at expiration, the stock is trading at $32. What is Knight’s profit (or loss) from his covered call strategy Knight:

A．

B．

C．