以下关于VaR的说法，错误的是（)。

A.find /var/ -user root-group mail

B.find /var/ -user root

C.find /var/ -group mail

D.find /var/ -user mail-group root

A./var/log/messages

B./var/named/

C./var/named/named.loopback

D./var/named/named.ca

A.var(β^)=0

B.var(β^)为最小

C.β^-β=0

D.(β^-β)为最小

A./var/adm/syslog.log

B./var/log/messages

C./var/adm/syslog/syslog.log

D./var/opt/resmon/log/event.log

A./var/wtmpx

B./var/pacct

C./var/adm/wtmpx

D./var/adm/pacct

A.A./var/log/ZMCC/MSO

B.B./var/log/ecomp/MSO

C.C.var/log/ecomp/SO

D.D./var/log/ZMCC/SO

A./var/adm/wtmp

B./var/adm/btmp

C./var/adm/syslog/btmp

D./var/adm/syslog/wtmp

A.A.mv datafile /var

B.B.mv /var datafile

C.C.mv datafile -d /var

D.D.mv datafile ../var

A.Z值没有单位

B.离均值越近，Z值越接近0

C.离均值越近，Z值(或-)越大

D.离均值越远，Z值(或-)越大