题目内容

工程类计划节点中“室内土方回填施工”属于()级节点
A1
B2
C3
D4

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前期准备类节点中“现场开工条件准备”属于()级节点
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If due to thick and hard deposits of carbon, the piston rings cannot move freely in their

A. micro-seizure
B. sticking
C. scratched
D. breakage / collapse

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