What is the test command used for?
What will be an ideal response?
The test command is used to analyze an expression to determine if it is true-often used in shell scripts to verify an environmental condition, such as the existence of a file.
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When a diesel engine is operating at its best efficiency, how much of the potential heat energy of the fuel is converted into usable energy at the flywheel?
A. 30 % B. 40 % C. 70 % D. 80 %
____ is the time when a primary follicle is ready to shed an egg mature enough for fertilization from the ovary.
A. Gestation B. Parturition C. Luteal phase D. Ovulation
Romex® is another name for _____.
a. Type MC cable b. Type NM cable c. Type AC cable d. Type SE cable
The dramatically reduced number of American farms and farmers in the postwar era was accompanied by
A. growing poverty in rural America. B. increasing shortages of American-grown food and fiber. C. radical protests by farmers and farm laborers. D. a romantic "back to the land" movement among city dwellers. E. spectacular gains in American agricultural productivity and food growing.