1.The app enables_________(用户) to see how much time they’re spending on the device and set up warnings if self-imposed usage limits are breached.
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1.For example, German car makerDaimler recently introduced an e-mail____________(自动删除) option for itsholidaying employees.
考虑以下事件:科学家发现,多吃橙子可以降低患糖尿病的风险,同时农民用了新的肥料,提升了橙子的产量。运用均衡价格理论解释这些变化对橙子的价格和均衡数量有什么影响。可以结合画图分析。
HPB300是Ⅰ级钢,热轧光圆钢筋
A. 对
B. 错
HRB335——(Ⅲ级钢)热轧带肋钢筋
A. 对
B. 错