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【单选题】
CT检查中，病灶都可以是混杂密度的是A.
脑肿瘤、钙化
B.
脑血肿、囊肿
C.
脂肪、脑肿瘤
D.
脑梗死、钙化
E.
脑肿瘤、脑血肿
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知识点：
皮皮学刷刷变学霸
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【简答题】肺的上端钝圆称 ,高出锁骨内侧1/3部约 cm。
【简答题】肺的上端钝圆，称为①____________，高出锁骨内侧部约②____________cm。
【单选题】But for his help, I wouldn't succeeded.
A.
wouldn't have
B.
hadn't
C.
didn't
D.
haven't
【单选题】But for his help, I ______.
A.
should not have succeeded
B.
have not succeeded
C.
did not succeed
D.
had not succeeded
【单选题】But for his help, I____.
A.
should have succeeded
B.
should not have succeeded
C.
shall have succeeded
D.
shall succeed
【简答题】But for his help I ______ (finish) my work. So I'm very appreciative of him.
【简答题】北京奥运会是______年举行，这一年的二月有______天，这一年共有______天．
【简答题】简述清扫机“惯性除尘”原理:
【简答题】“ 是实数， ”这一事件是___________事件．
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