什么叫抗氧化性？
参考答案：
在室温或高温下抗氧化的能力。
Victor apologized for __________ to inform me of the change in the plan. [ ]
A. his being not able
B. him not to be able
C. his not being able
D. him to be not able
施工总承包管理方(MC)对所承包的建设工程承担( )的总责任。
A．施工任务分包
B．施工任务执行
C．施工任务组织
D．施工任务承包
