All the food _____ ready now. Let's have a meal. [ ]
A. be
B. was
C. is
D. are
答案:C
输尿管肾镜取石的并发症有()
A.输尿管裂伤或断裂伤
B.输尿管穿孔
C.膀胱输尿管返流
D.尿失禁
E.感染
3#干熄焦锅炉属于()。
A、高温中压型
B、高温高压型
C、中温中压型
D、中温高压型