【单选题】如果损失发生时同时存在多种原因,且对损失都起决定性作用则近因是( )
【判断题】3-26在计算机接口技术中I/O通道就是I/O接口。
【简答题】我们身边的很多产品都存在冲突或矛盾,比如:笔记本电脑的尺寸,如果尺寸变大,可视性会变好,但便携性会变差;反之缩小尺寸,视觉效果会变差,但便携性会变好,则可视性与便携性之间存在冲突。再比如手机电池,如果手机电池尺寸变大,待机时间会变长,但便携性会变差;如果减小手机电池尺寸,则待机时间缩短,但便携性变好,则待机时间与便携性之间存在冲突。请仔细体会上述例子。 在你身边的常见物品中,举出一个存在冲突的产品...
【判断题】如果【图片】与【图片】都不存在,则【图片】也不存在.
【简答题】设A与B都是n阶矩阵,如果存在n阶正交矩阵P,使式(6.7)成立,则方程X+AX T B=F有唯一解的充要条件是 (6.9)
【单选题】Part I Short conversation. Listen to five short conversation and choose the best answer to each question you hear. (2 points for each question) 1.mp3:
A.
Call the secretary again at 10 today.
B.
Make another appointment.
C.
Express his thanks for the call.
D.
Cancel the meeting with the secretary.
【单选题】任何一个随机变量X,如果期望存在,则它与任一个常数C的和的期望为()
【单选题】采用链式存储保存线性表时,如果要进行插人和删除操作,则在算法的执行效率方面与采用顺序存储的线性表进行比较,()。
【单选题】Short conversation 2 Directions: Listen to the short conversation and choose the best answer to each question you hear.
A.
She should work in a hospital.
B.
She should have retired earlier.
C.
She is too young to be a nurse.
D.
She looks younger than she is.