风机的介质≥多少度必须加伸缩节().
A.30°
B.50°
C.70°
参考答案:B
--- Have you moved into your new house?
---- No. It _________at present.
A.will be decorated
B.is being decorated
C.is decorating
D.was decorated
早期浸润型膀胱癌的最佳检查方法是()
A.B超
B.CT
C.膀胱镜
D.膀胱造影
E.MRI