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问题 单项选择题

项目论证一般分为机会研究、初步可行性研究和详细可行性研究三个阶段。以下叙述中（）是正确的。

A.机会研究的内容为项目是否有生命力，能否盈利

B.详细可行性研究是要寻求投资机会，鉴别投资方向

C.初步可行性研究阶段在多方案比较的基础上选择出最优方案

D.项目论证是确定项目是否实施的前提

答案

参考答案：D

解析：机会研究的内容为寻求投资机会，鉴别投资方向。初步可行性研究阶段要研究项目是否有生命力，能否盈利。详细可行性研究是要在多方案比较的基础上选择出最优方案。项目论证是确定项目是否实施的前提。

单项选择题

Questions 58 to 62 are based on the following passage: ( 10分)　　According to the airline industry statistics, almost 90% of airline accidents are survivable or partially survivable. But passengers can increase their chances of survival by learning and following certain tips. Experts say that you should read and listen to safety instructions before takeoff and ask questions if you have uncertainties. You should fasten your seat belt low on your hips as tightly as possible. Of course, you should also know how the release mechanism of your belt operates. During takeoffs and landings you are advised to keep your feet flat on the floor. Before takeoff you should locate the nearest exit and an alternative exit and count the rows of seats between you and the exits so that you can find them in the dark if necessary.　　In the event that you are forewarned of a possible accident, you should put your hands on your ankles and keep your head down until the plane comes to a complete stop. If smoke is present in the cabin, you should keep your head low and cover your face with napkins, towels, or clothing. If possible, wet these for added protection against smoke inhalation. To evacuate as quickly as possible, follow crew commands and do not take personal belongings with you. Do not jump on escape slides before they are fully inflated, and when you jump, do so with your arms and legs extended in front of you. When you get to the ground, you should move away from the plane as quickly as possible, and never smoke near the wreckage.

Airline passengers are specifically told NOT to __

A．carry personal belongings in an emergency

B．locate the nearest exit

C．ask questions about safety during the flight

D．jump in any circumstances
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单项选择题

某企业10月31日银行存款日记账的余额为180000元，经逐笔核对，查出未达账项有：银行已收，企业未收的划款39200元；银行已付，企业未付的通信费6380元。调整后的企业银行存款余额应为( )。

A．212820元

B．219200元

C．177540元

D．45580元
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