What is a filehandle?
What will be an ideal response?
Like most high-level programming languages, Perl uses filehandles to reference files. A filehandle is the name for an I/O connection between your Perl program and the operating system, and it can be used inside your program to open, read, write, and close the file.
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What are safety devices used to protect the furnace from developing dangerous operating conditions?
A. Instrument control systems B. Pressure gauges C. Interlock control systems D. Draft control systems
The refrigerant in an absorption chiller whose source of energy is steam or hot water is ____________________.
Fill in the blank(s) with the appropriate word(s).
____ scales are combined on each face of a triangular architect's scale except for the full-size scale.
A. Two B. Three C. Four D. Six
What is a major cost of the actual milking process?
a. labor c. barns b. equipment d. medicine