问题
选择题
Don't be so discouraged. If you ________ such feelings, you will do better next time. [ ]
A. turn away
B. get back
C. break down
D. put away
答案
答案：D
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Don't be so discouraged. If you ________ such feelings, you will do better next time. [ ]
A. turn away
B. get back
C. break down
D. put away
答案：D
缺失，设计为基牙，烤瓷桥修复，
已分别塑瓷、烧结、形态修整，上釉后需焊接成一整体，采用的焊接方法是（）