A steel or copper wire used in a head gasket around the cylinder is called ________
A) Armor B) Fire ring C) Ridge block D) Either A or B
D
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Which are correct comparisons between welded joints and mechanical couplings? Select all that apply.
A) Mechanical couplings can offer flexibility for thermal expansions. B) Mechanical couplings are more expensive to install. C) Mechanical couplings are stronger and less prone to leakage.
When a cerebrospinal fluid specimen is needed for testing, the specimen is removed by needle from the L3-L4 interspace area of the vertebral column. Why?
A) There are no spaces between the other areas of the vertebral column. B) There is a higher pressure within the subarachnoid space at that point, so it is easier to obtain a specimen. C) There are no spinal nerves located in that area. D) There would be no possible damage to the spinal cord itself when the needle is inserted into the space. E) The space where the needle is inserted is larger than anywhere else along the vertebral column.
Technician A says that a good relay should measure between 60 and 100 ohms across the coil terminals. Technician B says that OL should be displayed on an ohmmeter when touching terminals 30 and 87. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
New residential air conditioning systems now primarily use:
A) HFC-134a. B) CFC-12. C) HFC-410A. D) HCFC-22.