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【单选题】
男.23岁。头晕、乏力1个月,加重伴鼻出血3天。查体:贫血貌,全身皮肤散在出血点,浅表淋巴结未触及肿大,心肺及腹部未见异常。实验室检查:Hb75g/L,WBCl.2×l09/L,Plt15×l09/L,网织红细胞0. 002。该患者可能的免疫异常是A.
CD4 +T细胞比例降低
B.
CD8+T细胞比例增高
C.
TNF水平降低
D.
补体降低
E.
y8TCR+T细胞比例降低
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【简答题】沥青混凝土路面按照石料粒径大小可以分为
【单选题】听力原文：W: I heard you took a trip to Mexico. How did you like it? M: Oh, I got sick and tired of hotels and hotel food. It was such a long journey that I felt exhausted wherever I went. As the saying go...
A.
Great but tiring.
B.
Relaxing and memorable.
C.
Unsatisfactory and exhausting.
D.
Exhausting but worthwhile.
【单选题】低碳钢拉伸时的应力应变关系曲线依次分为( )、( )、( )、( )。
A.
线弹性阶段，屈服阶段，强化阶段，局部变形阶段
B.
屈服阶段，弹性阶段，强度阶段，局部变形阶段。
C.
弹性阶段，屈服阶段，强度阶段，局部变形阶段。
D.
弹性阶段，强度阶段，局部变形阶段，屈服阶段。
【单选题】听力原文：M: Doctor, I feel sick. I have a bad stomachache, and my head troubles me a lot. W: Well, let me have a check. Open your mouth, please. And say 'Ah'. M: Ah! Is that serious, doctor? W: Not really...
A.
Yes, he did.
B.
No, he didn't.
C.
We are not sure.
【单选题】听力原文：W: I think I am running a temperature, and I feel sick. M: OK. Let's have a check-up. Come into the examination room, please. Q: What is the probable relationship between the two speakers? (18)
A.
Father and daughter,
B.
Teacher and student.
C.
Doctor and patient.
D.
Boss and secretary.
【单选题】低碳钢拉伸时的应力应变关系曲线依次分为（ ）、（ ）、（ ）、（ )。
A.
弹性阶段，强化阶段，局部变形阶段，屈服阶段
B.
线弹性阶段，屈服阶段，强化阶段，局部变形阶段
C.
屈服阶段，弹性阶段，强化阶段，局部变形阶段
D.
弹性阶段，屈服阶段，强化阶段，局部变形阶段
【单选题】听力原文：W: I think I'm running a temperature, and I feel sick. M: OK. Let's have a check-up. Come into the examination room, please. Q: What is the probable relationship between the two speakers? (13)
A.
Father and daughter.
B.
Doctor and patient.
C.
Teacher and student.
D.
Boss and secretary.
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