A buyer can purchase 70 screwdrivers. Ten 4-inch lengths, twelve 6-inch lengths, twenty 8-inch lengths are needed. How many heavy 24-inch screwdrivers can be bought to obtain the total of 70 screwdrivers?
Fill in the blank(s) with the appropriate word(s).
Answer: 8
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The most commonly used code for pressure vessels and nuclear components is ____________________.
Fill in the blank(s) with the appropriate word(s).
What is the difference between a heat recovery ventilator (HRV) and an energy recovery ventilator (ERV)?
a. The ERV can dehumidify in the cooling mode. b. The HRV can act as a humidifier in the heating mode. c. The ERV has a durable metal core. d. The HRV cannot be used in very cold climates.
Hay has best quality when prepared from mature plants
Indicate whether the statement is true or false
What type of detector should be used if a technician is looking for a refrigerant leak in a closed space?
A) Fluorescent dye leak detector B) Ultrasonic-type leak detector C) Electronic sight glass D) Electronic leak detector