【B10】
A. piano
B. desk
C. chair
D. table
单盐毒害无论是营养元素还是非营养元素都可能发生，而且在溶液浓度很低时就会受害，最后变为一团无结构的细胞
Speaker A： V m not at all satisfied with the service.
Speaker B ：_________
A. Nobody has complained like that before.
B. I sincerely apologize for that.
C. I wonder why you are satisfied with it.
D. It, s not our fault as there are too many customers.
患者，男性，63岁，前列腺增生多年，逐年加重，拟手术治疗，昨日入院，今测得残余尿60ml，残余尿的正常值是()。
A. 小于10ml
B. 15ml
C. 30ml
D. 50ml
E. 70ml
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