A. 污染区、清洁区 B. 清洁区、污染区 C. 无菌区、污染区 D. 污染区、无菌区
A. 益胃 B. 补气 C. 益肾 D. 补中
A. 正确 B. 错误
A. decrease in capabilities of radar B. decrease in displacement C. adverse effect on trim D. loss of stability