公路工程用碎(砾)石的强度用表示,压碎值越大表示()。
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各分、省公司负责()及上报工程建设前期及准备工作费用计划建议。
A. 审核
B. 执行
C. 编制
D. 监督
Why is gas-freeing rarely required for LPG cargo tanks? ()
A. LPG is compatible with all cargos
B. LPG's high oxygen content makes it nonvolatile
Cargo tanks are inspected less frequently than on oil tankers
D. The cargo tanks are used for one type of cargo only