, , ,
! . | |||
! . | |||
! . | |||
! . |
N 19
: MS Excel. MS Excel
! .! .! .! .
.
,
! . | |||
! . | |||
! . | |||
! . |
:
, , ( ). : ( ) . , , . , :
- ;
- ;
- ;
- .
.
N 20
: .
! .! .! .! .
, , ACADEMY, COURSE, GROUP, E:\, PROFESSOR, LECTIONS. , . , ,
! . | E:\GROUP\COURSE\ACADEMY | ||
! . | E:\PROFESSOR\LECTIONS\ACADEMY | ||
! . | E:\ACADEMY\COURSE\GROUP | ||
! . | E:\ACADEMY |
N 21
: