轮胎帘布层是胎体的骨架,具有耐热、耐冲击、和抗割裂性
参考答案:对
Ben asked ______ I was going to the beach the next day. [ ]
A. if
B. that
C. what
D. When
当前目录下有student和coure两个表文件,要求查找同时选修了课程号为“0001”和“0002”的学生姓名,语句为: SELECT 姓名 FROM student,coure; WHERE student.学号=coure.学号; AND 课程号=“0001”; AND 姓名 【13】 ; (SELECT 姓名 FROM student,coure; WHERE student,学号=coure.学号; AND 课程号=“0002”)