单项选择题
(单选)悬挑式楼梯最大悬挑长度可达( ),省去了平台梁和斜梁,也无楼梯间中间墙。
单项选择题 常见致病菌不包括__()
未知题型 The technology giant’s revenue in China fell 14% in the first quarter, its fifth (1)_______quarterly sales decline: China was the only region where Apple’s sales fell last quarter. The lack of a new iPhone model explains some of the fall.
单项选择题 理货中出现是商品破损,以下处理方式有误的是()