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【简答题】
试由不确定关系式估算氢原子可能具有的最低能量.
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】It is very (consider) ______ of you to look after my garden during my absence.
【简答题】He placed his house at my d______ during my holidays.
【单选题】— Will you see to _____ that my apartment is cleaned during my absence? — No, problem. [ ]
A.
everything
B.
all
C.
yourself
D.
it
【简答题】Please take care of my garden during my ______ . (absent)
【单选题】I accepted my nose surgery, the ____ and patient doctor was really helpful during my recovery period.
A.
graceful
B.
greedy
C.
gracious
【单选题】将待测血清分别稀释10,100,1000,10000倍,稀释到1000倍的时候就无法用仪器检测到和相应抗原发生反应了,则该血清的抗体效价是
A.
100
B.
1000
C.
1:100
D.
1:1000
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