If a diesel engine driving a generator turns over freely but fails to fire properly, the cause could be （）
That's really typical（）John. He says he'll come but he never turns up.
If a gasoline engine turns over freely but will not start，the cause is generally（）.
If a diesel engine driving a generator turns over freely but fails to fire properly, the cause could be （）
Which syntax turns an existing constraint on?（）
The user turns on the computer and hears a popping sound and detects a burning smell. Thesystem will not power on. Which of the following is the MOST likely problem?（）
The client connected to the database turns off his or her machine without exiting from a connection to the database. Which type of failure is this？（）
Which syntax turns an existing constraint on?（）
Which syntax turns an existing constraint on? （）
A technician turns on a PC and before the computer boots up, the technician is prompted for apassword. The technician does not know the password. Which of the following can the techniciando to allow access to the PC?（） (Select TWO).
