单项选择题
行政机关下列哪些做法体现了行政许可的便民原则__()
单项选择题 The star signs of the Western Zodiac are ?
单项选择题 下列关于铂类抗肿瘤药物描述不正确的是()
单项选择题 基于模态分布调制干涉技术的油气管道检测系统组成The composition of oil and gas pipeline detection system based on modal distributed modulation interferometry:()