在正向市场中进行多头避险(买进期货避险)，当期货价格上涨使基差绝对值变大时，将会造成

在“用打点计时器测定匀变速直线运动的加速度”的实验中，小车拖动纸带运动，打点计时器在纸带上打下了一系列的点，从中选出的一条纸带如图所示，图上相邻两个计数点间的时间间隔为0.1s，由此可求出小车在A点时的速度V_A=______m/s．小车的加速度是______m/s²．

一产妇足月妊娠，胎儿估计3800g，临产后20h胎头为棘下2cm。宫口开全、尾骨前翘，耻骨弓角度小，出口横径加后矢状径<15cm。

应采取下列哪项处理（）。

A.立即剖宫产

B.再观察

C.胎儿监护

D.心理护理

E.催产素引产

Students at a certain university have complained that some of their professors do not provide copies of their lecture notes at every class. The student body president has argued that, in order to further the educational purposes of the university, all professors should be required to post their lecture notes online.
Which of the following, if true, most weakens the students’ argument that the professors should be required to post their lecture notes online ？（）

A. At the most popular classes, there are often insufficient quantities of lecture note copies to accommodate all of the students.

B. Students have acknowledged that if the lecture notes are posted online, they will be less likely to go to class.

C. Professors complain that the university does not provide sufficient copying funds, so that professors often have to pay for copies of lecture notes out of their own pockets.

D. Over 80 percent of students have access to the Internet in their dorm rooms, and all students have 24-hour access to the Internet at the computer lab.

E. The university has publicly stated that one of the educational goals of the university is to help all students gain competency with the Internet.

某公司引进一名人力资源总监，这名总监上任后开始实施了将员工的工作绩效进行从高到低进行排列的考评制度。这个管理者采取了平衡记分卡的方法对公司进行绩效管理。

平衡记分卡的劣势包括（）

A.成本低

B.成本高

C.时间长

D.不够准确

将高级语言程序设计语言源程序翻译成计算机可执行代码的软件称为（）

A、汇编程序

B、编译程序

C、管理程序

D、服务程序