圈型卡环的卡环臂通常包绕基牙的()。
A.2个面和2个轴角
B.3个面和2个轴角
C.3个面和3个轴角
D.2个面和3个轴角
E.3个面和4个轴角
参考答案:E
A big party was held in NO.18 Middle School last night, the teacher with students _____ singing and
dancing happily at the party. [ ]
A. is
B. was
C. are
D. were
指蹼的修复方法不应采取
A.皮片移植法
B.游离皮瓣移植法
C.局部皮瓣转移,加皮片移植法
D.三角瓣加皮片移植法
E.舌形瓣,加皮片移植法