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【单选题】
红细胞比指红细胞A.
与血浆容积之比
B.
与血管容积之比
C.
与白细胞容积之比
D.
与全血容积百分比
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反馈参考答案：
举一反三
【单选题】__________ is to implement one method in the structure chart at a time from the top to the bottom.
A.
Stepwise refinement
B.
Top-down approach
C.
Bottom-up and top-down approach
D.
Bottom-up approach
【单选题】She ______ and fell from the top of the stairs to the bottom.
A.
slipped
B.
sloped
C.
split
D.
spilt
【简答题】简单介绍五个课程中介绍的近代物理学成就。
【单选题】In an I–beam spar, the top and bottom of the I–beam are called the ______ and the vertical section is called the ______.
A.
webs， cap
B.
caps， web
C.
ribs， stringer
D.
stringers， rib
【单选题】Traditionally, Chinese are written ______ in columns going from top to bottom and ordered from right to left.
A.
erectly
B.
straightly
C.
vertically
D.
uprightly
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