What statement about Transit AS is true?()
A. Traffic and prefixes originating from Source AS are carried across a Transit AS to reach theirdestination AS
B. Traffic and prefixes originating from Transit AS are carried across a Stub AS to their destination AS
C. Traffic and prefixes originating from Transit AS are carried across a Stub AS to their Source AS
D. None of the above
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钢材的力学性能主要取决于钢材的()。
A. 化学成分
B. 组织结构和化学成分
C. 表面质量
整队出发前,组长应检查作业人员()。
A. 着装
B. 工具
C. 防护用品
D. 精神状态
服用微生态制剂,应使用哪种液体冲服:()
A. 开水
B. 含乙醇的饮料
C. 温开水
化学絮凝法控制固相含量适用于()钻井液。
A. 分散体系
B. 不分散体系
C. 油基
D. 盐水