When Working with Refrigerant Cylinders Which of the Following Should

question 13

Multiple Choice

When working with refrigerant cylinders which of the following should not be done?

• A) Keep the outlet port of the refrigerant cylinder capped and the valve hood secured.
• B) Open cylinder valves slowly, and close after every use.
• C) Always store refrigerant cylinders in a horizontal position.
• D) Never add a source of external heat to a refrigerant cylinder.

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Definitions:

Complementary Nucleotide

A nucleotide that pairs with another nucleotide in the DNA double helix or RNA molecule, following the base pairing rules (A-T or A-U, and G-C).

Oncogenes

Genes that have the potential to cause cancer by driving cell growth and division at an abnormal pace, often resulting from a mutation of normal genes called proto-oncogenes.

Carcinogens

Substances or exposures that can lead to cancer.

p53 Gene

A tumor suppressor gene that plays a crucial role in controlling cell division and apoptosis, often mutated in cancer cells.