【单选题】糖在细胞培养中的作用是:I 细胞能量的主要来源;II 维持渗透压;III 是合成氨基酸的原料;IV 是合成蛋白质和核酸所需的碳源。
【单选题】One type of person that is common in many countries is the one who always tries to do as little as possible and to get as much (56) return as he can. His opposite, the man who has (57) for doing more ...
【单选题】以下关于单身模式(Singleton)的叙述中,说法正确的是(47)。
D.
它能够保证一个类的方法只能被一个唯一的类调用
【判断题】一般情形下,如果农贸市场价格大幅上涨影响到消费者利益,政府就应该介入干预。()
【多选题】根据《建筑安装工程费用项目组成》(建标【2013】第44号),规费中社会保险费由()组成。
【单选题】One type of person that is common in many countries is the one who always tries to do as little as possible and to get as much【56】return as he can. His opposite, the man who has【57】for doing more that...