Discuss why acetals are generally not made into fibers
What will be an ideal response?
The very high crystallinity of acetals makes them brittle and, therefore, not suitable for fibers.
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Steam heating of a blocked in heat exchanger full of a liquid can create dangerously ________________.
Fill in the blank(s) with the appropriate word(s).
Which frequency is a harmonic of 60 Hz?
A. 10 Hz B. 30 Hz C. 90 Hz D. 180 Hz
Technician A says that all injectors in a sequential fuel injection system often use the same power wire. Technician B says that each injector in a sequential fuel injection system should have a different ground wire. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
From a standpoint of removing the last residual magnetism in a workpiece, which type of magnetic chuck is preferred?
A) The electromagnetic chuck with degaussing circuitry B) The permanent magnet chuck C) The electro-permanent chuck D) They are equal