假设N很大,f可以忽略不计。已知总体方差为400,要求绝对误差限为5,置信水平95%,若采用简单随机抽样,样本量应该为()。 8。 64。 160。 320。
An administrator has received complaints from users that an application is not available while other applications run. This application resides on an NFS mounted filesystem. Which of the following commands should be run as a reasonable first step to handle this problem() df。 showmount。 exportfs。 refresh -g nf。
某企业有一期限为10个月的票据,本金为50万元,月利息率为10‰,截止评估基准日离付款期尚差三个半月的时间,则该票据的评估值为()。 532500元。 500000元。 517500元。 以上答案都不对。
Several people in an Information Technology (IT) department are asking for fileset updates that the system administrator received earlier that day on CD-ROM. The system administrator created an install directory on their machine and made it available to everyone. Which of the following commands will allow the system administrator to copy the images from the CD-ROM to the install directory?() smit bffcreate from the target directory。 tar -xvf /dev/cd0 from the target directory。 restore -xvqf /dev/cd0 from the target directory。 mount the cdrom on /cdrom and cp /cdrom/* . from the target directory。
王某独立账户的资产将受长江寿险公司整体负债增加的影响,收益下滑。() 对。 错。
市场预测的内容包括()。