Is this school ______you studied in three years ago?
A.where
B.that
C.the one
D.which
答案:C
以是否有获利机会为标准,火灾、沉船、车祸等均属于()
A.投机风险
B.纯粹风险
C.财产风险
D.人身风险
上颌结节传导阻滞麻醉时,进针方向是()
A.向上后
B.向上后外
C.向上后内
D.向后外
E.向后内