To clean copper tubing before brazing or soldering, use No. _____ steel wool.

a. 00
b. 01
c. 02
d. 03


a. 00

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?A devicemade of two unlike metals that is used to measure temperature is called a ____. 

A. ?thermocouple B. ?thermometer C. ?barometer D. ?voltmeter

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Horizontal distances over level ground are usually measured by two workers using a _____.

a. transit b. measuring tape c. laser level d. measuring wheel

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Grass is planted by seeding or ____.

A. sodding B. hydroponics C. silting D. strewing

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For the circuit in Fig. 4.141, determine the value of R such that the maximum power delivered to the load is 12 mW.

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