金属烤瓷桥未上瓷前常用的焊接方法是
A．前焊法B．后焊法C．点焊法D．铜焊法E．锡焊法
参考答案：A
Some students get _____ when they find watching English movies _____.[ ]
A. frustrated; frustrating
B. frustrating; frustrating
C. frustrated; frustrated
D. frustrating; frustrated
多数可被大剂量地塞米松抑制试验抑制的是
A．肾上腺皮质腺瘤B．Cushing病C．异位ACTH综合征D．单纯性肥胖
