地下水与地表水由于其形成条件和存在的环境不同，各有不同的特点，不包括( )方面。A

克山病可出现（）

A.甲状腺肿大

B.牙齿釉面着色和缺损

C.皮肤色素沉着和过度角化

D.心肌损害

E.多发性病理骨折

Man: I really can't afford any more interruptions right now. I've got to finish the assignment.Woman: Sorry. Just one more thing, could you give me a ride to school tomorrowQuestion: What can be inferred from the conversation

A．The man will drive the woman to school.

B．The man has finished his assignment.

C．The man is willing to help the woman.

D．The man is losing patience with the woman.

纳税人需办理变更税务登记，在纳税人报送资料刘全的前提下，税务机关向纳税人发放“税务登记变列表”一式三份，纳税人应于（）日内将填登完毕的税务登记变列表交税务机关审核。

A．7 

B．10 

C．15 

D．30

临床上一般根据那几项便可成立急性阑尾炎的诊断

A．转移性右下腹痛的病史

B．白细胞计数检查

C．右下腹固定而明确的压痛点

D．腹部平片见肠管胀气

E．尿常规检查

（）

A．1

B．83

C．2209

D．6889