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【单选题】
()是病毒吸附过程中决定病毒是否能感染某种细胞的重要的一环。A.
细胞是否具有抵抗机制
B.
细胞是否存在相同的DNA
C.
细胞是否具有相应的受体
D.
细胞是否存在所需的漏洞
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What does the phrase "two ways" refer to in the 6th paragraph?
A.
Calling on customers and communication in writing.
B.
Orally and verbally.
C.
By face-to-face contact and by correspondence.
D.
By trade delegations and groups.
【简答题】试用力法求解如图12-24a所示超静定梁，并作出其弯矩图，已知梁的抗弯刚度为EI。
【单选题】According to the passage, how many ways are there for water to get into the air?
A.
Two.
B.
Three.
C.
Four.
D.
Five.
【简答题】正交表具有()和正交性的特性。
【单选题】(练习1-4) What does the phrases “two ways” refers to in the 6th paragraph?
A.
calling on customer and communication in writing
B.
orally and verbally
C.
by face-to-face contact and by correspondence
D.
by trade delegations and groups
【单选题】What are two ways that we can organize paragraphs according to thispresentation?
A.
introduction, body, and conclusion
B.
block style. and point-by-point style
C.
summative and narrative
D.
point-by-point style. and comparative style
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