There are different types of fuel cells, but the most common type is the ____.
A. proton exchange membrane
B. electron exchange membrane
C. neutron exchange membrane
D. charge exchange membrane
Answer: A
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A ______ of wool is stronger than a fiber of steel the same size?
a. Strand c. Cuticle b. Fiber d. No answers
The greatest disadvantage of drum brakes is ________
A) Poor parking brake performance B) Brake adjustment C) Lack of power assist action D) Brake fade
Brake friction materials are being discussed. Technician A says molding bits of metal into a brake lining produces an excellent friction material. Technician B says composite linings can be made from synthetic fibers bonded together. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
A transformer that has one winding, which is used for both the primary and secondary, is called a(n) _____.
A. distribution transformer B. step-up transformer C. autotransformer D. control transformer