After a person has chickenpox, the virus becomes dormant in the spine's dorsal nerve root, but it can become active again later in life to cause shingles, also known as herpes _______________. 

Issuing a summons is one of the enforcement tools that fire officials may use to ensure compliance with fire and building codes

a. True b. False

Water is assumed to be ____________________ for most hydraulic problems.

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