高速铁路钢轨应符合（）规定。 A: TB/T3276 B: TB/T3200 C: TB/T3222 D: TB/T3232

创建名为course的数据库的命令是（ ）。 A: creat database course; B: creat course; C: create database course; D: create course;

Which course is not recommended by the professor to you in your first semester?? A writing course|A foundational course to your major|A challenging course leading you to a specialty|A physical education course

数据存储单位从小到大排序正确地是（） A: KB TB PB MB B: PB TB GB MB C: MB KB GB TB D: MB GB TB PB

数据存储单位从小到大排列顺序是（） A: MB、GB、TB、PB B: MB、GB、TB、EB C: MB、TB、GB、PB D: MB、TB、GB、EB

数据存储单位从小到大排列顺序是( )。 A: GB PB TB EB B: PB EB GB TB C: GB TB PB EB D: TB PB GB EB

【多选题】Course summary design is one of the most important parts for creating a course, which required top design for the whole course including course background, course objectives, design principles, l

删除表course的记录。其SQL语句为（ ）。 A: DELETE from course where * B: DELETE * from course C: DELETE course D: DELETE FROM course

有一稀溶液浓度为m，沸点升高值为△Tb,凝固点下降值为△Tf,则（ ）。 A: △Tf＞△Tb B: △Tf=△Tb C: △Tf<△Tb D: 无法确定

有一稀溶液浓度为 m，沸点升高值为 ΔTb，凝固点下降值为ΔTf， 则 A: ΔTf > ΔTb B: ΔTf = ΔTb C: ΔTf < ΔTb D: 不能确定