Which of the following is a true statement?
A. Batteries self-discharge at a higher rate in cold temperatures.
B. Surface charge refers to hydrogen gas bubbles that form on the plates during battery charging.
C. The open-circuit voltage of a fully-charged 12V lead acid battery is 12.2V.
D. All of the above are true statements.
Answer: B
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Una ventaja de utilizar radios portátiles de baja potencia es que:
a. son baratas b. no tienen interferencias c. filtran bien el ruido de fondo d. no requieren mantenimiento
The ____ is the basic building block of the universe.
a. proton b. electron c. atom d. molecule
As women's status changed, men's lives changed in all of the following ways EXCEPT
A. employers offered paternity leave in addition to maternity leave. B. companies increasingly acknowledged shared obligations of two-worker households. C. more men took on traditional female household chores. D. Congress passed a Family Leave Bill that protected jobs for fathers and mothers who need time off for family reasons. E. men began to look outside of their marriages for the emotional connections they once shared with wives.
The circumference of a circle can be found by using C = pi x ____________________.
Fill in the blank(s) with the appropriate word(s).