"_________do you play the piano?" "Twice

封闭式基金与开放式基金的区别主要是( )。

A．存续期限不同

B．投资对象不同

C．规模可变性不同

D．基金交易方式不同

治疗手术后肠麻痹及膀胱麻痹最好用()

A．毒扁豆碱

B．新斯的明

C．加兰他敏

D．乙酰胆碱

E．以上皆否

Your company CEO just sent you an E-mail asking you to make a … on your project , which has been in progress for 10 months , to all Identified internal and external stakeholders. He scheduled the presentation for next Monday.You expect more than 50 people to attend. The first step in preparing the presentation is to ( ).

A. define the audience

B. determine the objective

C. decide on the general form of the presentation

D. plan a presentation strategy

区分下列各组物质的两种方法均正确的是                                                    [ ]

一台安装WindowsXP系统的计算机与局域网的连接正常，但无法访问该局域网内其他计算机上的共享资源，可能的原因是（）。

A．Windows XP 系统自带的防火墙阻止

B．网卡接口损坏

C．安装了虚拟内存

D．系统的存储空间不足