Carbohydrates are made of what three elements?
a. hydrogen, oxygen, and nitrogen c. carbon, hydrogen, and oxygen
b. carbon, hydrogen, and nitrogen d. carbon, helium, and oxygen
C
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All of the following statements about the air injection system are true EXCEPT:
A. a diverter valve, or a similar type of device, prevents a backfire during deceleration. B. a one-way check valve prevents exhaust from backing up into the hoses and pump. C. a high-pressure vane-type pump driven by a crankshaft belt provides air. D. computer-controlled three-way catalyst systems include an air switching valve that moves the injected air into the exhaust manifold or into part of the catalytic converter.
During which period in human history did technological innovations occur at the greatest rate?
What will be an ideal response?
Sketch the usual architectural materials symbol for batt insulation.
What will be an ideal response?
What part in the master cylinder helps keep air from contacting the brake fluid yet allows the fluid level to drop as the disc brakes wear?
A) Compensating port B) Residual valve C) Rubber diaphragm or floating disc D) Vent valve