Typically made of foam, ____ are used to create exterior walls for both foundations and above-grade locations.
A. modern building blocks
B. insulated cement forms
C. concrete blocks
D. insulated concrete forms
Answer: D
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If the synchronous motor operates at subsynchronous speed, the squirrel cage winding may ____ and be damaged.
a. subcool b. restart c. overheat d. reset
During testing, all electrical equipment and conductors are to be considered ____________________ until determined de-energized by testing methods.
Fill in the blank(s) with the appropriate word(s).
All of the following are true about the use of a shackle except _____.
a. shackles with pins worn more than 10 percent should be replaced b. a shackle pulled out at an angle has a reduced capacity c. a shackle should never be used such that the pin can roll under load d. when using a shackle with a hook, the shackle body should be hung on the hook
La herramienta de acabado que se usa para obtener una superfi- cie acabada lisa es _____.
a. la aplanadora b. la llana c. el fratás d. el apisonador