单项选择题

PLC的继电器输出型的接口只可驱动交流负载，且响应时间长，动作频率低。
A、正确
B、错误

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单项选择题

Sellers pay more of a tax imposed on a good when
A、. the demand for the good is more inelastic.
B、. the supply of the good is more elastic.
C、. the supply of the good is less elastic.
D、. the supply of and the demand for the good have the same elasticity.

超星尔雅学习通《明史十讲（复旦大学）》2023章节测试答案-5

答案： B、中立

C、反驳

D、看戏

正确答案：D

2、...