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【多选题】
下列选项中属于要约邀请的是( )。A.
商业广告
B.
投标书
C.
招股说明书
D.
寄送的价目表
E.
拍卖公告
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】got woken up today by my daughter 's scream,“Dad ... it's snowing!"
【单选题】下列关于酶活性中心的叙述哪项不正确
A.
酶活性中心内有结合基团及催化基团
B.
酶活性中心只是必需基团的作用而与整个酶分子无关
C.
辅酶或辅基是必需基团之一
D.
酶活性中心结构需与底物分子相适应
E.
酶原无活性中心或活性中心被掩盖
【单选题】Base on "Dad": When my dog got run over :
A.
I was too young to understand my father’s words and wanted to escape
B.
I was comforted by my father’s words although I could understand him then
C.
My father comforted me silently with his big arms and his own tears
D.
My father failed to comfort me as I did not understand his thoughts
【单选题】下列关于酶活性中心的叙述哪项不正确?( )
A.
活性中心内有结合基团及催化基团
B.
活性中心只是必需基团的作用而与整个酶分子无关
C.
辅酶或辅基是必需基团之一
D.
活性中心构象需与底物分子相适应
【单选题】—Dad，it’s raining heavily and I haven’t got my umbrella．How can I go back home? —No worry，Honey！I’ll be right there to you ．
A.
take；up
B.
catch；up
C.
pick；up
D.
bring；up
【单选题】下列基团 +C ( 共轭 ) 效应按增加的顺序排列应该为( )
A.
1 > 2 > 3 > 4
B.
3 > 2 > 1 > 4
C.
3 > 1 > 2 > 4
D.
2 > 3 > 1 > 4
【单选题】下列关于酶活性中心的叙述哪项不正确
A.
活性中心内有结合基团和催化基团
B.
酶活性只与活性中心有关，与酶分子其他部分无关
C.
辅酶或辅基是必需基团之一
D.
活性中心构象需与底物分子相适应
E.
活性中心必须具备特定的空间构象
【单选题】---Look! Dad, my College Graduation Certificate! I’ve got it! ---____dear! You have finally realized your dream.
A.
congratulation
B.
celebrations
C.
congratulations
D.
greetings
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