Explain drupal user, permission, role in drupal?

101

I have an excel file that will not open. I am using windows 95 on a workstation connected to a windows nt 4.0 server. What is the problem?

681

What do you mean by semaphore?

991

How is method overriding different from overloading?

1055

Explain about solution explorer window?

1043

what is the effect of power factor of machines in starting current

2061

Explain sequence of salesforce triggers and order of execution?

521

What is a blocking code?

514

What is trigger in pl sql with examples?

1050

What is the mmf,rgt and ngt please brief completely

1637

just for testing

2141

i measured a 3-ph capacitor with a multimeter which is not connected to supply... but i could get the phase to phase voltage... how tis is possible..????

1858

Interop Services?

1975

What are the functions of excel?

696

Explain scope of static variables?

976