危险化学品零售业务的店面内显著位置应设有“禁止明火”等警示标志
正确
暂无解析
If their marketing team succeeds, they __ their profits by 20 percent.
生物群落的季节变化受环境条件特别是受 ______ 周期变化所制约。
_____在文学上积极鼓吹 "小说界革命 "。
_ is known to the world, Mark Twain was a great American writer.
夸美纽斯的主要著作是（）
