单项选择题
A1型题
B.1/3~2/5张
C.1/3~2/3张
D.1/2~1/3张
E.2/3~等张
补充继续损失,所选液体张力一般为()
A.1/5~1/4张B.1/3~2/5张
C.1/3~2/3张
D.1/2~1/3张
E.2/3~等张
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单项选择题
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