用数字和化学符号表示: (1)2个钠离子______;(2)3个铝原子_____ 发布时间:2017-05-15 16:24 │ 来源:www.tikuol.com 题型:问答题 问题: 用数字和化学符号表示:(1)2个钠离子______;(2)3个铝原子______;(3)4个氢氧根______;(4)二氧化硫分子______.
题型:问答题 患者男,35岁,肩关节外伤。查体:肩关节外形未见异常,上肢上抬活动受限。根据MRI影像(下图),诊断为()A.冈上肌腱完全撕裂B.冈上肌腱部分撕裂C.肱二头肌长头肌腱撕裂D.冈上肌腱慢性损伤E.肩关节滑膜炎 查看答案
题型:问答题 —Why, my new computer is rubbish! Five hours has passed and it still hasn’t finished the downloading. —Don’t worry. You know, sometimes the Internet ________ be very slow.A.canB.mayC.shouldD.must 查看答案