信息集成的主要目的是()
A.表达主题
B.压缩信息
C.批量处理
D.打包传输
参考答案:A
按要求完成下列作图题
(1)如图1所示,放在斜面上的静止的物体,请作出该物体所受力的示意图.
(2)如图2所示,重100N的均匀木棒AB在细绳拉力作用下保持静止.请你画出木棒所受重力和所受拉力的力臂的示意图.
Jane Austen's main literary concern is about ______.
A. maturity achieved through the loss of illusionsB. the love story between the rich and the poorC. human beings in their personal relationshipsD. the daily country life of the middle-class English