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【简答题】
简述短路环的作用。
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Do Paul and his son have a reservation?
A.
No, they decided to come back the next day.
B.
No, they will come back soon.
C.
No, they don't want to sit by the fence.
【多选题】艾滋病的基本特征有（ ）
A.
中度以上细胞免疫缺陷
B.
B淋巴细胞功能失调
C.
自然杀伤细胞(NK细胞)活性下降
D.
发生各种致命性机会感染，尤其是卡氏肺囊虫肺炎
E.
发生恶性肿瘤如卡氏肉瘤，以同性恋发生率最高
【单选题】下面哪一条不是免疫缺陷病的共同特征
A.
免疫缺陷的基本结果是增加了感染的敏感性
B.
免疫缺陷患者有发生恶性肿瘤的倾向
C.
免疫缺陷的临床与病理成明显异源性
D.
免疫缺陷都表现为细胞免交疫功能缺陷
【单选题】Paul eventually came to Kate's house with a police officer, ________ he was reunited with his car. [ ]
A.
where
B.
which
C.
that
D.
there
【单选题】下面哪一条是免疫缺陷病的共同特征（ ）
A.
免疫缺陷的基本结果是增加了感染的敏感性
B.
免疫缺陷患者有发生恶性肿瘤的倾向
C.
免疫缺陷的临床与病理成明显异源性
D.
免疫缺陷可表现为细胞免疫功能缺陷、体液免疫功能缺陷、吞噬细胞缺陷、补体缺陷
E.
以上都是
【简答题】阅读理解。 His name is Paul. He is from England, and he's thir years. His birthday is December 16th. He gets up at 6:00. He goes to school at 7:00. He has four classes in the morning. He does exercises...
【简答题】上述哪种病有三个基本特点：严重的细胞免疫缺陷；发生各种致命的机会感染；发生各种恶性肿瘤
【单选题】—What’s the matter with Paul? —A letter from his parents in New Jersey _________ as attack of homesickness.
A.
set out
B.
set about
C.
set up
D.
sent off
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