特发性肺含铁血黄素沉着症关节痛的原因是A．关节腔出血B．关节炎_爱下问搜题

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问题单项选择题

特发性肺含铁血黄素沉着症关节痛的原因是

A．关节腔出血
B．关节炎
C．慢性缺氧
D．外伤
E．低钙

答案

参考答案：C

补全对话，情景问答

给下列的问句选择合适的答语。

( ) 1. Who's that man?
( ) 2. What's he like?
( ) 3. Where's he from?
( ) 4. Is Miss Wang young?
( ) 5. Is Mr. Wang old?

A. He's from China.
B. He's my teacher.
C. No, she is old.
D. He's short and thin.
E. No, he is young.

单项选择题

《工程建设项目施工招标投标办法》和《工程建设项目货物招标投标办法》规定，招标人与中标人签订合同后( )个工作日内，应当向未中标的投标人退还投标保证金。

A．5
B．10
C．15
D．30