________ is a gaseous plant hormone responsible for fruit ripening.

Fill in the blank(s) with the appropriate word(s).


Ethylene

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Una caja se incluye en el NEC® como caja que contiene una cantidad máxima de ocho cables número 12. Si la caja tiene una abrazadera para cable y un receptáculo doble, _____ cable(s) se tendrá(n) que deducir del total permitido.

a. 1 b. 2 c. 3 d. 4

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Blood from the systemic circulation returns to the heart by way of the

A) coronary sinus. B) pulmonary veins. C) venae cavae. D) aorta. E) pulmonary arteries.

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A fluorinated refrigerant whose number starts with a 4 is:

A) A compound. B) Zeotropic. C) Azeotropic. D) Flammable.

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A 5/16-in bolt with national fine threads will have:

A) 18 threads per inch. B) 16 threads per inch. C) 24 threads per inch. D) 20 threads per inch.

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