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【单选题】
曲线 在点P（－1，0）处的切线方程是A.
B.
C.
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反馈参考答案：
举一反三
【单选题】What was the finding of the experiment?
A.
Passengers helped a lot during incidents.
B.
Very few foreigners err in the train.
C.
Very few passengers tried to help during incidents.
D.
Some people were good at acting in the train.
【简答题】 简述间歇强化的类型?
【单选题】During World War I, radio ______ .
A.
was very popular among the public
B.
was the symbol of family entertainment
C.
had developed to a high level
D.
was facing some technical problems
【单选题】下列说法错误的是：()
A.
工会依法设有独立的银行账户，自主管理和使用工会经费、会费。
B.
女职工委员会主任由企业工会女或副担任。
C.
企业工会督促企业按照有关规定，按照职工工资总额的百分之一提取职工教育培训费用。
D.
企业工会组织合并，其经费财产归合并后的工会所有。
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