【简答题】硅酸盐水泥的强度等级有 、 、 、 、 和 六个, 其中 R 型为早强型水泥。
【判断题】砝码使用一定时期(一般为一年)后,应对其质量进行校准。()
【简答题】句型转换。 1. Li Ming needs a T-shirt. (改为否定句) Li Ming a T-shirt. 2. Would you like to come? ( 改为同意句) you ? 3. He has some new books. (改为否定句) He new books. 4. I like the red dress. (用the green dress 改为选择疑问...
【判断题】砝码使用一定时期(一般为一年)后应对其质量进行校准。
【简答题】情景对话。 ( )1. Have we got any juice? ( )2. Would you like to go to piano lesson? ( )3. What's your favourite sport? ( )4. What's on at the cinema? ( )5. When is the football match? A...
【简答题】读对话,选择恰当的答句。 ( ) 1. What do you want to do? ( ) 2. Would you like to play ping- pong? ( ) 3. How many pencils? ( ) 4. What is it? ( ) 5. Where is the picture? A. The picture is abo...
【单选题】成绩表(学生ID,课程ID,课程名,学生名,成绩),该表中学生ID、课程ID分别为外键,合并为主键。哪个字段不符合第二范式?