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【多选题】
3 毒性反应类型?
A.
非共价键结合
B.
共价键结合
C.
氢键吸引
D.
电子转移
E.
酶反应
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参考答案:
举一反三
【简答题】He brought us a piece of (surprise) ______ news.
【单选题】下列电子式中错误的是
A.
钠离子:
B.
氢氧根离子:
C.
氨分子:
D.
一氯甲烷:
【单选题】根据职务规则,三副的基本职责包括______。1按船长指示管理货物装卸;2主管救生、消防设备;3定期对救生艇筏进行检査保养;4保持所有救生信号的有效期。
A.
①②③④
B.
②③④
C.
①④
D.
②③
【判断题】通过读秀学术搜索的文献传递功能,读者邮箱接收到的资料,可以在校园网范围之外打开阅读。
A.
正确
B.
错误
【单选题】下面有关自旋弛豫的叙述,错误的是( )
A.
T1驰豫是处于激发态的自旋质子返回到原来的状态的过程
B.
T2驰豫是因为自旋质子的失相位
C.
T1驰豫和T2驰豫是先后发生的两个驰豫过程
D.
自旋驰豫是在RF 脉冲被关闭后发生的
E.
以上都不对
【简答题】Though he was born and brought up in America, ?Though he was born and brought up in America, he can speak ___________ Chinese. A)fluid          B) smooth         C) fluent        D) flowing
【单选题】What is true about the man?
A.
He was born in Scotland and brought up in England.
B.
He was born in England and brought up in Scotland.
C.
He was born and brought up in Scotland.
D.
He was born and brought up in England.
【单选题】Although he was born and brought up in America, he ______ Chinese fluently.
A.
speaks
B.
will speak
C.
can speak
D.
would speak
【单选题】He was born in Beijing and _____ by his grandma in a seaside village.
A.
brought in
B.
brought out
C.
brought up
D.
brought back
【单选题】若 ,则下列式子中错误的是(     )
A.
B.
C.
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