容易出现烤瓷冠瓷裂的是
A.牙体缺损较大而无法做充填治疗B.牙体过小无法取得足够的固位形和抗力形C.金属与烤瓷间有牢固结合D.机械结合E.瓷层局部过厚
参考答案:E
根据句意选词填空。
1. Tomatoes and potatoes are ______ (health, healthy) food.
2. There ______ (is, are) some juice in the bottle.
3. There aren't ______ (any, some) beef in the fridge.
4. Apples are healthy food ______ (and, but) hamburgers are unhealthy food.
5. Have we got ______ (any, some) melons?
患者,男性,30岁,患者低热、咳嗽半月。胸片发现右上肺空洞,痰涂片抗酸杆菌阳性。2天来咯血500ml。刚才在连续咯血后出现气急。烦躁不安、大汗、发绀,治疗应立刻首选()
A.静脉注射脑垂体后叶素
B.吸氧
C.病侧卧位
D.积极取出血块,解除阻塞
E.气管切开