单选题Provision must be made in pipe systems for changes in length due to change of temperatureThe bold and italic word “provision” probably means （）.AflangesBnutsCexpansion jointsDbolts
单选题
Provision must be made in pipe systems for changes in length due to change of temperatureThe bold and italic word “provision” probably means （）.
A
flanges
B
nuts
C
expansion joints
D
bolts
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