The P&ID symbol 
indicates that this instrument is ____________________ and ______________________________.
Fill in the blank(s) with the appropriate word(s).
inaccessible, behind a panel
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To help prevent condensation, some vertical seals are designed with ____.
A. fiber dams B. conductors C. drain plugs D. horizontal seals
Interiorscape designers need to know and speak intelligently about the____ to communicate with each
other in their schools, businesses, and public gardens and with professionals in allied industries.
a. tenets of marketing c. principles of design b. philosophy of sales d. rules of success
The wiring methods allowed for underground service entrance installations are listed in Section 230.30(B). They include rigid metal conduit (RMC), intermediate metal conduit (IMC), __________, and USE conductors or cables.
a. rigid PVC conduit (PVC) b. Type NM cable c. Type AC cable d. electrical metallic tubing (EMT)
Why is AC instead of DC power transmitted to buildings?
A) DC power would require giant batteries. B) Since AC power goes both ways, it can redistribute power that is not used. C) Normal household lights will not work on DC power. D) It is easier to step the voltage up and down with AC power.