Many technicians always use new pushrods because ________
A) They are less expensive to buy than clean
B) They wear at both ends
C) Pushrods shrink in length if removed from an engine
D) All dirt cannot be cleaned out from the hollow center
D
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Answer the following statements true (T) or false (F)
1. Everything else being the same, a concrete with a larger coarse aggregate requires less Portland cement and water paste to give the same concrete strength. 2. Lightweight structural concrete is heavier than insulating concrete. 3. After concrete has been placed in the form, it should be consolidated as much as is economically practical. 4. The rate at which concrete gains strength increases as the ambient air temperature increases. 5. According to building codes, plain concrete (concrete without steel reinforcement) is not permitted in new construction.
Para una óptima eficiencia, los codos y las uniones en T deben _____.
a. aplicarse después de instalar todos los demás aislamientos b. aplicarse antes de instalar los tramos rectos c. aplicarse en cualquier momento del trabajo d. Ninguno de los anteriores.
A(n) _____ is an atom or molecule which has lost or gained one or more electrons.
A. element B. oxide C. ion D. neutron
If a wall measures 24' x 28', and made of 8" block, how many cubic yards of grout are needed to fill all block cells?
What will be an ideal response?