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【单选题】
If the ratio of price of cloth (PC) divided by the price of food (PF) increases in the international marketplace, then
A.
the terms of trade of cloth exporters will improve.
B.
all countries would be better off.
C.
the terms of trade of food exporters will improve.
D.
the terms of trade of all countries will improve.
E.
the terms of trade of cloth exporters will worsen.
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All of the cells are at an equal distance from each other.
B.
The arrangement of the cells looks like two parallel lines.
C.
The cells tend to group together in a large clump.
D.
The red cells and the plasma separate in an irregular pattern.
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【判断题】用指针式万用表测量电压时因未调零而产生的测量误差属于人身误差。
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【单选题】In cross matching, how does a compatible match appear under the microscope?
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