5岁小儿按公式计算身长、体重及头围分别约是（）。 A.身长90cm、体重12kg、头

阅读理解，判断正"T误"F"。

     Hello, I am Tom. I come from New York, America. Now I am in Beijing. Here is my grandfather. He

has a company (公司) in Beijing. He  is  a manager (经理). He likes Beijing. He often says Beijing is a

beautiful city and the Mid-Autumn Festival is very special here. He always stays in China for the festival.

He can speak only a little Chinese. He works hard. I love him very much.

( ) 1. Tom is from Beijing.

( ) 2. Tom's grandfather is a manager.

( ) 3. Tom's grandfather can speak Chinese well.

( ) 4. Tom's grandfather stays in America for  Mid-Autumn Festival.

( ) 5. Tom doesn't like his grandfather very much.

血液病病人的白细胞数低于下列哪项时需进行保护性隔离()。

A．1.0×10⁹/L

B．1.5×10⁹/L

C．2.0×10⁹/L

D．2.5×10⁹/L

E．3.0×10⁹/L

企业对非常规的、无法预估结果发生概率的业务活动进行经营决策时，通常采用的决策方法是(　)。

A．确定型决策方法

B．不确定型决策方法

C．风险型决策方法

D．离散型决策方法

简述二乙基二硫代氨基酸银分光光度法测定水中砷的基本原理。

对重要旅客运输，地面人员应与机组交接（）

A.《特殊旅客运输通知单》

B.《特殊旅客服务单》

C.《要客名单》

D.《VIP服务交接单》