On air-over hydraulic systems Technician A says that hydraulic pressure forces the pistons in the wheel cylinders outward. Technician B says that air pressure acts on a piston in the master cylinder to make brake applications. Who is correct?

A. Technician A
B. Technician B
C. Both
D. Neither


Answer: C

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El componente designado con una A en la Figura 3 es _____.



a. una viga invertida
b. una viga de tímpano
c. una viga en voladizo
d. una viga interior

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The number of squares of 1' × 8' drop siding (to the nearest square) required for a hip roof structure that is 40' long and 25' wide with 10' high walls, fifteen 3' × 5' windows, one 8' × 7' garage door, and two 8' × 7' sliding doors is _____. (Assume a waste allowance of 16%.)

a. 7 b. 9 c. 11 d. 13

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___________ brought about the transfer of superior genes from parents to offspring

a. Fertilization c. Artificial insemination b. Sterilization d. Ossification

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When the oil pressure drops to between 3 and 7 psi, the oil pressure lamp lights by _________

A) Grounding the circuit B) Shorting the circuit C) Conducting current to dash lamp by oil D) Opening the circuit

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