【简答题】在DataSet对象中,可通过()集合遍历DataSet对象中所有的数据表对象。
【简答题】在DataSet对象中,可通过[填空(1)] 集合遍历DataSet对象中所有的数据表对象。
【简答题】土色料,其中Fe2O3的含量按重量计为80% ________________
【简答题】在DataSet对象中,可通过()集合遍历DataSet对象中所有的数据表对象。(注意首字母大写)
【单选题】Students of math must read the written material in the text before class because______.
A.
their instructors will explain it in class
B.
it contains much valuable information
D.
it was written by some famous mathematicians
【单选题】In the author's opinion______.
A.
advertising can seldom bring material benefit to man by providing information
B.
advertising informs people of new ideas rather than wins them over
C.
there is nothing wrong with advertising in persuading the buyer
D.
the buyer is not interested in getting information from an advertisement