【简答题】x与y的差的5倍与2的和是一个非负数,可表示为 ( ) A. B. C. D.
【简答题】用不等式表示: (1)x与2的和小于5______.(2)a与b的差是非负数______.
【多选题】Which two statements are true regarding the USING and ON clauses in table joins?()
A.
Both USING and ON clauses can be used for equijoins and nonequijoins
B.
Amaximum of one pair of columns can be joined between two tables using the ON clause
C.
The ON clause can be used to join tables on columns that have different names but compatible data types
D.
The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause
【单选题】用不等式表示“x的3倍与2的差是非负数”正确的是( )
【单选题】In India you will be advised against using the left hand for passing food at table because ______.
A.
it is considered dirty
B.
it symbolizes something unlucky
C.
it is supposed to be used for shaking hands with a friend
D.
it signifies disagreement
【判断题】选修课课程形式设置一般是视频课程 + 章节习题 + 富媒体知识资源
【单选题】x与2的差是非负数,表示为
【单选题】● Using the table in the Special window, Which task is completed?
【简答题】用不等式表示: ①x的2倍与5的差不大于1;②x的 1 3 与x的 1 2 的和是非负数 ③a与3的和的30%不大于5;④a的20%与a的和不小于a的3倍与3的差.
【简答题】Questions 33-36 Complete the table using NO MORE THAN THREE WORDS for each answer. 【33】