龈下菌斑内的可动菌是
A.牙龈卟啉单胞菌B.梭形杆菌C.螺旋体D.普氏菌E.放线菌
参考答案:B
女,50岁。无痛血尿半年。查体:双肾未扪及,尿中找到癌细胞,膀胱镜检查未见异常。
为进一步明确诊断,最适宜的方法是:()。
A.腹部平片
B.尿路造影
C.肾动脉造影
D.尿三杯试验
E.放射性核素肾扫描
One impact that the burning of ______ fuels has had on the Earth's environment has been the increase of carbon dioxide in the earth's atmosphere.
A.vehicle
B.oil
C.gas
D.fossil