【单选题】词汇题 He _______ out of the window and saw that it was raining.
【简答题】数据库应用 一、实验目的 1. 掌握数据清单的应用。 2. 掌握数据排序的操作。 3. 掌握数据筛选的操作。 4. 掌握分类汇总的操作。
【简答题】Luckily,we'd brought a road map without that we would have lost our way.
【简答题】(1)目前,我国采用“接触法”制硫酸。有关接触法制硫酸的下列说法中,正确的是_________。 A.二氧化硫的接触氧化在合成塔中发生 B.吸收塔得到的硫酸浓度为98% C.煅烧含硫48%的黄铁矿时,若FeS 2 损失了2%,则S损失4% D.接触室中适宜条件是V 2 O 5 催化剂、高温、常压 E.接触室中采取高温是为了提高催化剂的活性和提高SO 2 的转化率 (2)硫酸工厂排放的尾气中,含少量...
【简答题】建立图表 一、实验目的 1. 掌握内嵌图表和图表工作表的创建。 2. 掌握图表的编辑。 3. 掌握图表的格式化。
【单选题】Getting help from him is ______ he is such a selfish person.
【简答题】Luckily, we'd brought a road map without ______ we would have lost our way. A.he B.this C.who D.which
【单选题】Luckily, we'd brought a road map without _____ we would have lost our way. [ ]