Decomposing wastes produce methane and a compound called hydrogen ____

A) peroxide
B) sulfide
C) monoxide
D) none of these


B

Trades & Technology

You might also like to view...

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

Trades & Technology

Trees or shrubs that are planted together so they can point out a special feature, provide privacy, or

create a small garden area are known as a:

a. cluster planting c. group planting b. border planting d. landscape planting

Trades & Technology

When using a recovery machine manufactured after November 15, 1993, the recovery level for Type II systems containing over 200 lb of R-22 refrigerant is:

A) 0 psig. B) 4 in Hg vacuum. C) 10 in Hg vacuum. D) 15 in Hg vacuum.

Trades & Technology

A vital part of the full-body harness is the fixed back _____

a. T-clamp b. A-frame c. K-connector d. D-ring

Trades & Technology