After riveting is completed, the joints on the shell of a vessel are generally made watertight by________.A.fayingB.caulkingC.felt or canvas packingD.red lead
After riveting is completed, the joints on the shell of a vessel are generally made watertight by________.
A.faying
B.caulking
C.felt or canvas packing
D.red lead
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Allowances may be made for the expansion and contraction in piping by the use of expansion joints or ().A.UnionsB.Retractable flangesC.Union bulkhead fittingsD.Bends or loops in the line
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单选题Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure? （）ATearing through the member is more likely in this type connectionBThe weld may be broken by the stresses caused by rivetingCThe weld increases the tensile stress on the rivet headsDThe welding must be completed before the riveting commences
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