A vocational school can also be called all of the following except a certification school.
The answer is (d.) display and pilot light
An automatic drip coffee maker displays two output from the digital controller; the time and the light or output signal. According to the US Patents publication, an automatic drip coffee maker includes a timer circuit. It's to provide pre-selected time for the activation and deactivation of the coffee maker.
Well, this is pretty tricky so lets define all the purposes of these
Safe mode - troubleshoots windows ; determines HARDWARE malfunctions
Check device manager - Highlights malfunctioning hardware that is connected to the P.C.
Refreshing pc - practically nothing
resetting your pc - removes all programs, files, etc. and starts as a new Windows.
I will have to go with answer C.) Refresh your P.C.
21%4 is 1.
21-4=17
17-4=13
13-4=9
9-4=5
5-4=1