阵发性睡眠性血红蛋白尿的实验室检查最主要诊断依据是（） A.红

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问题单项选择题

阵发性睡眠性血红蛋白尿的实验室检查最主要诊断依据是（）

A.红细胞渗透脆性试验增高

B.血红蛋白电泳异常

C.外周血中CD55阴性细胞数量增多

D.抗人球蛋白（Coombs）试验阳性

E.高铁血红蛋白还原试验异常

答案

参考答案：C

补全对话，情景问答

补全对话。用适当的单词补全对话。

W: What happened before printing was invented?

M: People had to use l _ ways to record information. In the beginning they used to carve Chinese

characters on stones to 2 important dates in history.

W: Do you call that printing?

M: No, not exactly. But later, people developed a 3 of printing, using rocks.

W: How?

M: After they carved the 4 on rocks, they put a piece of wet paper on top of the characters and beat

it lightly. Then they brushed ink on the paper.

W: How did the printing come out?

M: The characters on the paper were 5 , and the rest of the paper was black.

单项选择题

把缺乏流动性但具有未来现金流的金融资产汇集重组，转变为可在金融市场上出售和流通的证券，从而提高资产流动性的做法是（）。

A.资产置换

B.资产出售

C.资产剥离

D.资产证券化