High head pressures from low ambients can cause insufficient refrigerant flow rates through metering devices, which in turn starve evaporators.
Answer the following statement true (T) or false (F)
False
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Allelopathic chemicals, once added to soil, usually make the affected soil unsuitable for any plant life for periods of years
Indicate whether the statement is true or false
Which of the following statements are false?
A. When using cranes and hoists, all tools or materials to be raised or lowered do not need to be stacked or secured to prevent shifting and snagging. B. A caisson is an airtight and watertight structure in which construction work can be done underground or underwater. C. Employees must be deemed physically capable of undertaking work under compressed air by a physician. D. None of the above
Which of the following is a new standard for serial ports in PCs?
A) COM B) USB C) T1 D) RS-232
Which of the following materials can be detected by a capacitive proximity detector?
A. liquids B. nonmetallic solids C. powders D. granular materials E. all of the above