窝洞制备的原则如下,除外A.保护牙髓 B.制备固位形 C.去净龋坏组织 D.保留健康 发布时间:2017-12-29 18:32 │ 来源:www.tikuol.com 题型:单项选择题 问题: 窝洞制备的原则如下,除外A.保护牙髓B.制备固位形C.去净龋坏组织D.保留健康组织E.不考虑抗力形
题型:单项选择题 根据句意写单词。1. The m______ book is on the dresser.2. There is a video c______ behind the TV.3. Please take these t______ to your bed.4. Those are her CDs. T______ are on the chair.5. W______ your photo? It's on the wall.6. Thanks for your c______ games.7. What's on the desk? There is an a ______ clock on it. 查看答案
题型:单项选择题 船舶在波浪中横摇的大小,主要取决于船舶本身的横摇周期Tθ与波周期τ的比值,当Tθ/τ>1时,则:()A.船舶横摇快,甲板上浪多B.船舶横摇慢,甲板上浪少C.船舶横摇慢,甲板上浪多D.船舶横摇快,甲板上浪少 查看答案