Which statements about inheritance are true？（） [" In Java programming language only allows single inheritance."," In Java programming language allows a class to implement only one interface."," In Java programming language a class cannot extend a class and implement a interface together."," In Java programming language single inheritance makes code more reliable."]
什么叫风电闭锁？
下列表述正确的是（） ["总需求曲线是反映总需求与利率之间关系的曲线","总需求曲线上的点不表明产品市场与货币市场同时达到均衡","总需求曲线是表明总需求与价格水平之间关系的曲线","在以价格和收入为坐标的坐标系内，总需求曲线是向右下方倾斜的","在以利率和收入为坐标的坐标系内，总需求曲线是向右上方倾斜的"]
在其它条件不变的情况下，导致总需求曲线向右移动的因素有（） ["政府支出增加","自发投资增加","政府税收的减少","储蓄的减少","储蓄增加"]
植物细菌性病害哪些主要症状？
当事人主义的特点是什么？
