試題詳解

35. Stainless steel bellows expansion joints are commonly used since they will absorb movement or vibration in several planes, eliminate maintenance and reduce friction and heat loss. Which caution is not necessary to do when expansion joints are installed?
(A) The joint is installed at its length more than the limit.
(B) Maximum and minimum working temperatures must be considered when choosing the joint.
(C) The joint must be so installed that it is neither over-compressed nor over-extended.
(D) The installation length must be appropriate to the temperature at installation.