解剖式人工牙的牙尖斜度是()
A.0°
B.15°
C.5°
D.30°
E.40°
参考答案:D
Last year, another two beautiful bridges ___________ over the Jialing River.
A.built
B.are built
C.were built
D.will be built
直肠指检对下列哪些疾病有诊断或鉴别诊断意义()
A.胃癌
B.直肠癌
C.急性阑尾炎
D.肠梗阻
E.盆腔脓肿