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【单选题】
关于离子交换速度,描述错误的是( )。
A.
交换剂颗粒愈小,离子交换速度越快
B.
交联度低, 离子交换速度较快
C.
升高温度离子交换速度较快
D.
高价离子扩散较快
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举一反三
【单选题】以神经毒素致病的细菌是
A.
霍乱弧菌
B.
脑膜炎奈瑟菌
C.
伤寒杆菌
D.
肉毒梭菌
E.
乙型溶血性链球菌
【判断题】The Celts laid the foundations of the English state.
A.
正确
B.
错误
【判断题】kindergarten teacher 幼儿园老师
A.
正确
B.
错误
【简答题】Answer the following Questions according to the passage. 1. What does “kindergarten” mean in German? 2. As a kindergarten teacher, what should we provide for children? 3. Why is preschool education ve...
【简答题】The girl can speak English.(改为一般疑问句)_____________the girl________________English ?2.Tom oft1.The girl can speak  English.(改为一般疑问句) _____________the girl________________English  ? 2.Tom often studies i...
【简答题】The English Revolution was sometimes called the ____ revolution.
【简答题】Kindergarten teacher
【简答题】句型转换。 1.  The boy is poor at English.  (改为同义句) The boy is ___________ ___________ English. 2.  I have a pain in my head.  (改为同义句) I have a  ___________. 3. His father went to Hong Kong five years ago ...
【简答题】句型转换。 1.The boy is English. (用American把句子改成选择疑问句) __________ the boy English __________ American? 2.He had some books. (改为否定句) He __________ __________ __________ books. 3.There is some milk in the gl...
【单选题】(3周2次课)此段程序为开关控制LED循环点亮,当开关闭合等开始亮,若断开开关,灯的情况是怎样的?
A.
全部熄灭
B.
最后一个灯亮
C.
循环到当前的灯亮
D.
全部亮
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