假設(shè)每臺機床只能完成一道工序，現(xiàn)有四道工序需要分配到四臺機床上，分配成本（以元計）如下所表示，由于工藝要求，工序一不能分配到機床丙上，工序三又不能分配到機床丁上。成本最低的分配方案中，其成本是（  ）

A．12       B. 13       C. 14      D. 15

某航空公司為滿足客運量日益增長的需求，擬購置一批新的遠(yuǎn)程、中程及短程的噴氣式客機。每架遠(yuǎn)程客機價格670萬美元，中程客機500萬美元，短程客機350萬美元。該公司現(xiàn)有資金12000萬美元用于購買飛機。據(jù)估計每架遠(yuǎn)程客機的年凈利潤為82萬美元，中程客機的年凈利潤為60萬美元，短程客機的年凈利潤為40萬美元。假設(shè)該公司現(xiàn)有的熟練駕駛員可支持30架新購飛機的飛行任務(wù)，維修能力足以滿足新增40架新的短程客機的維修需求，而每架中程客機維修量相當(dāng)于4/3架短程客機，每架遠(yuǎn)程客機維修量相當(dāng)于5/3架短程客機，為獲取最大利潤，該公司應(yīng)購買各類客機分別為（）架。
A.遠(yuǎn)程17，中程1，短程0   
B.遠(yuǎn)程15，中程1，短程2
C.遠(yuǎn)程12，中程3，短程3  
D.遠(yuǎn)程10，中程3，短程5

某公司打算向它的三個營業(yè)區(qū)增設(shè)6個銷售店，每個營業(yè)區(qū)至少增設(shè)1個，各營業(yè)區(qū)年增加的利潤與增設(shè)的銷售店個數(shù)有關(guān)，具體關(guān)系如下表所示?？梢哉{(diào)整各營業(yè)區(qū)增設(shè)的銷售店的個數(shù)，使公司總利潤增加額最大達(dá)（  ）萬元。

A．520        B.490        C.470       D .510

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

A data warehouse is a subject-oriented data set used for reporting and analusis. Data warehouses can be subdivided into (     ). Which store subsets of data from a warehouse.
A . OLTPs    B. transactions    C. data marts    D. OLAPs

The communication management plan determines the information and communications needs of the stakeholders. In the following statements related to communication management plan.  (     ) is false.
A. The communication management plan is contained in or is a subsidiary plan of, the project management plan.
B. The  communication  management  plan  can  be  formal  or informal, highly detailed or broadly framed, and based on the needs of the project.
C. The  communication  manamgement  plan  organize  and summarize the information gathered,and present the results of any analysis as comparedthe performance measurement baseline.
D. The communication management plan can include guidelines project status meetings,project team meetings,e-meetines,and e-mail