【单选题】根据《合同法》的规定,下列关于要约和承诺的表述中正确的是( )。
【判断题】Students don’t like to go to school abroad. College and universities don’t want learners from other countries ()
【判断题】投影操作主要是从列的角度进行运算,不涉及行操作。
【简答题】数值平均数主要包括______、______和______。
【单选题】The students carrying books come in first, ___________?
【简答题】选择运算是从( )的角度进行的运算,投影操作是从( )的角度进行的运算。
【单选题】Students ________________slippers(拖鞋) when they are at school.
C.
are not allowed to wear
D.
are not allowed to put on