如图展示了日常生活或生产技术中的四种情况,其中运用了增大压强的知识的是[ ]
A.
B.
C.
D.
B
If my father ______here now, he _____ tell me what to do. But he left home just one hour ago.
A.were, would
B.were, will
C.is , would
D.is, will
男,50岁,缺失,以为基牙行可摘局部义齿修复。
制备支托时,其颊舌径宽度约为()
A.颊舌径的1/3
B.颊舌径的1/2
C.近远径的1/2
D.近远径的1/3
E.以上都不对