多项选择题Which of the following activities can be one’s hobbies? A、playing badminton B、reading C、sleeping D、Calligraphy
单项选择题三跨连续梁合拢段的顺序为 A、先边跨后中跨 B、先中跨后边跨 C、边跨和中跨同时合拢 D、通过计算确定
