Concrete starts to harden about ____________________ minutes after it is mixed
Fill in the blank(s) with the appropriate word(s).
15
fifteen
You might also like to view...
What type of overhead crane system runs on an elevated rail system along the length of a warehouse and provides three axes of hook motion?
A. Gantry cranes B. Jib cranes C. Monorail cranes D. Overhead traveling bridge cranes
Technician A says that the first step in the diagnostic process is to verify the problem (concern). Technician B says that the second step is to perform a thorough visual inspection. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
The input section of an isolation amplifier is comprised of
A) an op-amp, a modulator and a PWM B) an op-amp, a modulator and an oscillator C) an op-amp, a demodulator and an oscillator D) an OTA, a modulator and an oscillator
A major advantage of pipe flanges is ____.
A. quick disassembly B. resistance to high pressure C. resistance to vibration D. reduced space requirements