女,49岁, 缺失,前牙区Ⅲ°深覆颌,余留牙无异常。
人工牙可选择()。
A.瓷牙
B.铸造牙
C.锤造牙
D.金属舌面牙
E.金属颌面牙
参考答案:C
The doctor is skilled at treating heart trouble and never accepts any gift from his patients, so he has a very good_____.
A.expectation
B.reputation
C.contribution
D.civilization
一个质量是200g的铁球,温度从150℃下降到100℃,求它放出的热量.[已知:铁的比热容等于0.46×103J/(kg•℃)].