A ____ is the horizontal member on which the feet are placed when climbing or descending the stairs.
a.riser
b.stair carriage
c.tread
d.stair stringer
ANS: C
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Al seleccionar el amperaje nominal de fusibles y disyuntores, la consideración más importante es:
a. el tamaño y el tipo de carga. b. la temperatura ambiental. c. el aislamiento del conductor. d. el tipo de conductor.
Temperatures exceeding the upper limit of an animal's thermoneutral zone will have no effect on animals
Indicate whether this statement is true or false.
The ____ the period during which the electrode force is applied and the welding current is shut off.
A. squeeze time B. weld time C. hold time D. off period
When an open occurs on the input of a CMOS gate, the output will ________
A) go HIGH, since full voltage appears across an open B) be treated as if the open input were a HIGH C) go LOW, because there is no current in an open circuit D) be unpredictable; it may go HIGH or LOW