To sterilize terrarium soil, it should be placed in an oven at _____

A) 165°F for 30 minutes
B) 170°F for 20 minutes
C) 180°F for 30 minutes
D) 190°F for 20 minutes


C

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?Technician A says that vacuum readings for an engine with a performance camshaft might be lower at idle. Technician B says that an engine that has worn lower main bearings will have lower oil pressure at freeway speeds. Who is right?

A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B

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The cold anticipator starts the cooling system early to allow the air-conditioning system to get up to capacity when needed.

Answer the following statement true (T) or false (F)

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The accompanying figure shows two plumbing symbols. What is the symbol at the bottom?

A. Urinal B. Wall-mounted lavatory C. Shower D. Water heater

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How are refrigerants with a higher toxicity level labeled?

A) Letter "C" B) Letter "D" C) Letter "B" D) Letter "A"

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