The following example shows a(n) ____ variable:%animals = ('Tigers', 10, 'Lions', 20, 'Bears', 30);
A. array
B. scalar
C. hash
D. string
Answer: C
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A(n) ____________________ backup is a backup of a set of specified files, regardless of whether they have been modified or otherwise flagged for backup.
Fill in the blank(s) with the appropriate word(s).
What type of signal is produced by the throttle position sensor used by Caterpillar ADEM managed engines?
A. mechanical B. V-DC C. V-AC D. PWM
When installing a split system, what should be done before opening the installation valves?
A) Purge the lines and coil with nitrogen to ensure that they are clean. B) Heat the valve body with a torch to loosen it so that it will turn freely. C) Evacuate the lines and coil. D) Add a small quantity of water to prevent the o-rings in the valves from drying out.
The digit that changes most often when counting is called the ________
Fill in the blank(s) with correct word