问题
选择题
after a whole day’s work that he could hardly stand it.
A.So was tired and hungry he
B.Was so tired and hungry he
C.So tired and hungry was he
D.So tired and hungry he was
答案
答案:C
after a whole day’s work that he could hardly stand it.
A.So was tired and hungry he
B.Was so tired and hungry he
C.So tired and hungry was he
D.So tired and hungry he was
答案:C
每个案例至少有5个提问,每个提问有6~12个备选答案,其中正确答案有1个或者多个。
患者刘某,女,25岁,A1近中切角缺损,行烤瓷熔附金属全冠修复。 |
通过对金属基底冠进行除气,预氧化操作的目的是
A.便于遮色层附着
B.去除金属表面有机物
C.释放金属表层气体
D.释放金属内部应力
E.在金属表面形成氧化膜降低金属热膨胀系数