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【单选题】
关于α-珠蛋白生成障碍性贫血的论述，正确的是A.
HbH病是本病的一个亚型，缺失3个α基因
B.
本病是由于珠蛋白β链基因缺陷而引起
C.
按照缺失基因数量的不同分为两型
D.
本病红细胞渗透脆性增加
E.
本病往往呈大细胞性贫血
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举一反三
【多选题】需进行简略试验，说法正确的是（ ）。
A.
单机附挂车辆时
B.
机车改变司机室操纵时
C.
客列检作业后和旅客列车始发前
D.
列车摘挂补机，或第一机车的自动制动机损坏交由第二机车操纵时
【单选题】Tihe young ma n insisted he ____no thing wrong and that the police___him．
A.
did: released
B.
had done; release
C.
had done; must release
D.
should do; should release
【简答题】The young man at the counter had some sort of registration problem. It is _______ in the first year. The woman behind the counter clearly felt, as I did, _______ for this young man, who was _______ by...
【简答题】A. It was brave of him. B. What happened? C. How was the young man then? D. What’s wrong with the girl? E. A young man came up at that time. F. What do you think of the young man? G. No, he ...
【简答题】阅读短文，从 41～50 中选出正确答案。 A young man (Example: 0 ) going to join the army () and had to 11 a medical examination. The doctor was sitting at a desk when he came in. He said to the man, “Take your coat a...
【单选题】关于窦房结的描述，错误的是
A.
窦房结位于上腔静脉和右心房结合部心外膜下
B.
呈椭圆形
C.
血液供应来自窦房结动脉
D.
窦房结内有普肯耶细胞
E.
主要受左侧神经的支配
【简答题】A young man was going to join the army and had to take a medical examination. The doctor was sitting at a desk when he went in. He said to the man. “Take your coat and shirt off, and sit on the chair....
【简答题】The young man at the counter had some sort of registration problem. It is inevitable in the first year. The woman behind the counter clearly felt________________(局促不安,不好意思), as I did,for this young ma...
【单选题】--- The young man spent as much time as he _______ the experiments. --- No wonder he succeeded _______.
A.
did; by the end
B.
could doing; in the end
C.
could doing; at the end
D.
could to do; in the end
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