工资核算系统中,职工编号通常是由( )组合而成的群码。A.职工所属部门编码 B.职 发布时间:2022-05-17 18:38 │ 来源:www.tikuol.com 题型:多项选择题 问题: 工资核算系统中,职工编号通常是由( )组合而成的群码。A.职工所属部门编码B.职工工作性质编码C.个人顺序码D.工资科目编码
题型:多项选择题 My name is Bill. I'm an American boy. I'm twelve. I'm a student of a middle school. I'm in . Li Lei is my friend. We're in the class. He is eleven Here is a picture of his family! look at it. His father, the one behind the tree, is a policeman His mother, the one in the red hat, is a Chinese teacher. He has two sisters. They are twins. Their names Fang Fang and Fang Ling. They have a cat. name is Mimi. Look! It's the floor under the table. The twins are middle school students, too. They are in different . We are good friends. They often look after me at school. After ,we often chat each other. The twins like doing sports, and they are good at playing volleyball. I want them to be happy forvever(永远)小题1:A.class one, grade fourB.Class One, Grade FourC.Class one, Grade fourD.class One, grade Four小题2:A.sameB.different C.oneD.some小题3:A.Let usB.It'sC.LetD.It小题4:A.beB.isC.areD.am小题5:A.onB.inC.toD.behind小题6:A.teamB.gradeC.classesD.school小题7:A.classB.classesC.sleepD.morning小题8:A./B.withC.to .D.about小题9:A.bothB.allC.are bothD.are all 查看答案
题型:多项选择题 (12分) 如图所示,有界匀强磁场的磁感应强度B=2×10-3 T;磁场右边是宽度L=0.2 m、场强E=40 V/m、方向向左的匀强电场.一带电粒子电荷量q=-3.2×10-19 C,质量m=6.4×10-27 kg,以v=4×104 m/s的速度沿OO′垂直射入磁场,在磁场中偏转后进入右侧的电场,最后从电场右边界射出.(不计重力)求:(1)大致画出带电粒子的运动轨迹;(2)带电粒子在磁场中运动的轨道半径;(3)带电粒子飞出电场时的动能Ek. 查看答案
题型:多项选择题 15.充分燃烧某糖,消耗的氧气、生成的CO2和H2O 的物质的量都相等,它的相对分子质量是它实验式的5倍,0.1 mol该糖能与24 g乙酸发生酯化反应,且该糖能与银氨溶液发生银镜反应。求: (1)实验式。 (2)相对分子质量、分子式。 (3)若该糖是直链分子,同一个碳原子上连有2个羟基不稳定,推导出它的结构简式。 查看答案