伸入液体中的开口玻璃管由于表面张力作用,因而管内液面比管外液面()。
A.高
B.低
C.水平一致
D.A或B
参考答案:D
.I fell down and broke three of my teeth. I wonder how many times I have to come here and get my false teeth _______.
A.fix
B.fixing
C.fixed
D.to fix
位于上颌侧切牙与尖牙之间的非牙源性囊肿(影像检查如图)是()
A.球上颌囊肿
B.鼻腭囊肿
C.正中囊肿
D.鼻唇囊肿
E.角化囊肿