水灰比愈大,砼流动性大,砼工作性愈好。()
参考答案:错
Tom __ not be murderer(凶手) because I saw he was at other place at that time(在那时).[ ]
A. must
B. can
C. is
D. will
女性,45岁,肉眼血尿,膀胱镜检见右侧壁有一1.5cm×1cm * * 状新生物,有蒂,病理检查分期为T1期,首选治疗方法是
A.膀胱全切除
B.化疗
C.电切
D.放疗