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【单选题】
有关乳腺摄影加压的叙述,错误的是A.
使乳腺扁平，厚度均匀
B.
使乳腺面积增大，病灶检出效率高
C.
乳腺组织越薄，照片清晰度越高
D.
肿块较大时，应加大压力，以提高照片清晰度
E.
乳腺、胶片、增感屏三者紧贴，减小几何模糊
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【单选题】关于巨噬细胞吞噬率的描述，正确的是
A.
吞噬率（％）=吞噬CRBC的巨噬细胞数／200×100％
B.
吞噬率（％）=吞噬SRBC的巨噬细胞数／200×100％
C.
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D.
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E.
以上均不对
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【单选题】题干: 雾中发放声号的时间间隔每次不超过:
A.
号笛、号钟、号锣均为2分钟
B.
号笛、号钟、号锣均为1分钟
C.
号笛为2分钟,号钟、号锣均为1分钟
D.
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