电抗值测量试验时,为调压器的输出波形,可在调压器()一台电感、电容串联的滤波器。
A. 输出端串联
B. 输出端并联
C. 输入端串联
D. 输入端并联
桥台采用预埋铸铁管或钢管内外面均应除铁锈污斑,并涂沥青防锈,管身坡度不得小于()%
A. 3
B. 2
C. 4
Which command can be used to verify that filesystems are being exported by a server?()
A. showmount -e ServerName
B. vi /etc/exports
C. startsrc -g nfs
D. exportfs -i FileSystemName