下列关于船舶分类的说法中,正确的是()。A.潜水船是按船舶用途分类的 B.普通货船是 发布时间:2017-07-03 11:02 │ 来源:www.tikuol.com 题型:单项选择题 问题: 下列关于船舶分类的说法中,正确的是()。A.潜水船是按船舶用途分类的B.普通货船是按船舶用途分类的C.柴油机船是按船舶推进器型式分类的D.以上都对
题型:单项选择题 — Alice, you look puzzled. Have you understood it?— Yes, I _____ another problem just now.[ ]A. have thought of B. thought of C. was thinking of D. had thought of 查看答案
题型:单项选择题 一定体积的KMnO4溶液恰好能氧化一定质量的KHC2O4·H2C2O4·2H2O。若用0.100 0 mol/L的NaOH溶液中和相同质量的KHC2O4·H2C2O4·2H2O,所需NaOH溶液的体积恰好为KMnO4溶液的3倍,则KMnO4溶液的浓度(mol/L)为提示:①H2C2O4是二元弱酸 ②10[KHC2O4·H2C2O4]+8KMnO4+17H2SO4==8MnSO4+9K2SO4+40CO2↑+32H2O [ ]A.0.008 889 B.0.080 00 C.0.120 0 D.0.240 0 查看答案