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【判断题】
在擦拭内存金手指时,越用力擦拭的越干净。( )A.
正确
B.
错误
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举一反三
【简答题】Tom was only seven 1 , so when he went 2 to camp with a lot of other small boys one summer, his mother thought it might be unhappy, and arranged for all his aunts and his grandmother and all his relat...
【单选题】- Did you work out the problem , Tom ? - Yes , of course . I _______ to the teacher’s .
A.
have just been
B.
have just got
C.
have just come
D.
have just gone
【单选题】欲配制pH=9约为的缓冲溶液,下列缓冲对选择哪一对最合适?()。
A.
- ；Ka2=6.23×
B.
HCN-NaCN ；Ka=4.93×
C.
NH3-NH4Cl；Kb=1.76×
D.
HAc-NaAc；Ka=1.76×
【简答题】阅读C.docx 从文中标红的单词中找出合适的填空。 1. David was my course ______ at university. 2. I thought Jennifer was rather _____ as she talked little about herself. 3. Tom did ____ in the exam last term. 4. Tony took p...
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