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【单选题】
G- 细菌细胞壁的最内层成分是:A.
磷脂
B.
肽聚糖
C.
脂蛋白
D.
脂多糖 (LPS)
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举一反三
【单选题】狂犬病毒几乎可以感染所有温血动物，但造成人类感染的主要传染源是下列哪一种（）
A.
带病毒蝙蝠
B.
带病毒野生动物
C.
带病毒犬
D.
带病毒啮齿动物
E.
带病毒家畜
【单选题】狂犬病毒几乎可以感染所有温血动物，但造成人类感染的主要传染源是下列哪一种（）。
A.
带病毒犬
B.
带病毒蝙蝠
C.
带病毒家畜
D.
带病毒啮齿动物
E.
带病毒野生动物
【简答题】完型填空。 The computer was one of the most important inventions of last century. The first computer was as large as a room. Now some computers are as 1 as television sets. Some computers can even be made ...
【单选题】听力原文：W: What started you in computers? M: I built my first computer when I was in Junior High School. I was an enthusiastic reader. I studied everything I could get my hands on. Then I turned to build...
A.
He turned to become an enthusiastic reader.
B.
He went on to build a machine for his Junior High School.
C.
He became obsessed with computer engineering.
D.
He was brushed by a hook.
【单选题】听力原文：M：When was the first computer built? W：It was built in 1944. M：Is it the same as the computers that we use now? W：No，it was as large as a room and worked very slow. M：But computers have become sm...
A.
It was as large as a TV set.
B.
It was as large as a room.
C.
It was as large as a book.
D.
It was as small as a palm.
【单选题】Which of the following is the first known analog computer?
A.
Personal computer
B.
Difference Engine
C.
Personal Computer
D.
Antikythera mechanism
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