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搜题
【单选题】
临床治疗暴发型流行性脑脊髓膜炎的首选药是A.
头孢氨苄
B.
磺胺嘧啶
C.
头孢他啶
D.
青霉素G
E.
复方新诺明
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【简答题】As a high school athletics coach, I gave a speech about football to students and parents, aiming at getting new team members :I talked about how'everyone can benefit from football. This year, a worr...
【单选题】She told me not to come home after midnight.
A.
my mother
B.
my coach
C.
my friend
D.
my neighbor
【多选题】以下哪些句子是宾语从句,请选择
A.
I don’t know that girl.
B.
I think that Jenny knows the answer.
C.
I hope that we can have lunch together.
D.
My coach told me that I should eat some vegetables and fruit for supper.
E.
This is your desk. That is mine.
F.
She always talks like that.
【简答题】反应的速率常数k的物理意义是什么？当时间单位为h，浓度单位为mol·L -1 ，对一级、二级和零级反应，速率常数的单位各是什么？
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