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【简答题】
化合物A在薄层板上从样品原点迁移7.2cm,溶剂前沿迁移至A斑点以上5.8cm处。 (1)计算A的Rf值。 (2)若溶剂前沿移动至样品原点以上11.2cm,A斑点应在此薄层板上何处?
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【简答题】How does technology help prolong our life?A. Patients can go anywhere to seek modern medicine. B. With modern medicine, people with cancer do not suffer from the pain. C. With modern medicine, people ...
【单选题】十进制数482对应的BCD码是
A.
111100010
B.
0111100010
C.
100100010
D.
010010000010
【单选题】女性,34岁,肛周伤口反复破溃伴有少量溢液,在此种情况发生前,病人最可能患有
A.
内痔
B.
外痔
C.
肛裂
D.
直肠脱垂
E.
直肠肛管周围脓肿
【单选题】患者,女性,34岁,肛周伤口反复破溃伴有少量溢液。在此种情况发生前,患者最可能患有
A.
内痔
B.
外痔
C.
肛裂
D.
直肠脱垂
E.
直肠肛管周围脓肿
【单选题】How does technology help prolong our life?
A.
Patients can go anywhere to seek modern medicine.
B.
With modern medicine, people with cancer do not suffer from the pain.
C.
With modern medicine, people with AIDs do not suffer from the pain.
D.
With modern medicine, some deadly diseases can be treated now.
【单选题】How does technology help prolong our life?
A.
How does technology help prolong our life?
B.
With modern medicine, people with cancer do not suffer from the pain.
C.
With modern medicine, people with AIDs do not suffer from the pain.
D.
With modern medicine, some deadly diseases can be treated now.
【判断题】乳管靠近开口的1 /3段略膨大为壶腹部,是乳管内乳头状瘤的好发部位。
A.
正确
B.
错误
【简答题】“蝴蝶效应”由气象学家洛伦兹于1963年提出,其大意是:南美洲亚马孙河流域热带雨林中的一只蝴蝶,偶尔煽动几下翅膀,可能在两周后引起美国德克萨斯的一场龙卷风。“蝴蝶效应”不仅体现惊人的想象力和迷人的美学魅力,更蕴涵着深刻的哲学内涵。它揭示了( )。
【单选题】How does technology expand our vision of the world?
A.
It gives us ideas that never occurred to us in the past.
B.
It makes our life easier and more convenient.
C.
It helps us spread our ideas more quickly.
D.
It brings us more advanced products.
【单选题】女性,34岁,肛周伤口反复破溃伴有少量溢液,在此种情况发生前,患者最可能患有
A.
直肠肛管周围脓肿
B.
直肠脱垂
C.
肛裂
D.
外痔
E.
内痔
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