MATLAB将函数f(x)在x=1处展开为5次多项式,所使用的指令是( )。 A: tailor(f,x,1,'order',6) B: tayler(f,x,1,'order',5) C: diff(f,x,1,'order',5) D: taylor(f,x,1,'order',6)

There are following business statements for an information system:①A customer submit 0 or more orders;②An order can only be submitted by one customer. There are two classes in the system “Customer” and “Order”. For each instance of Order Class, there are ____ instance(s) of Customer Class; while for each instance of Customer Class, there are ____ instance(s) of Order Class. A: (1) 1 (2) 1 B: (1) 1 (2) 1 or more C: (1) 1 (2) 0 or more D: (1) 0 or more (2) 1

哪种方式通过对比页面变化能判断 sql 注入（）。 A: order 1 和 order 2 B: ' or 1=1 和' or 1=2 C: '和'' D: ' and 1=1 和' and 1=2

The number of subgroups of order 25 of an Abelian group of order 50 is ( ). A: 0 B: 1 C: 2 D: 3

请选择下面正确的SQL语句( ) A: select * from 表名 order by 列名1 and order by 列名2 B: select * from 表名 order by 列名1,列名2 C: select * from 表名 where 列1=值1 and 列2=值2 D: select * from 表名 where 列1=值1 and 列1=值2

ORDER BY 子句可包括多个排序列，ORDER BY '排序列1' [ASC, DESC], '排序列2' [ASC, DESC

B. Rewrite each sentence using the adjectives in parentheses to describe the underlined noun. Put the cumulative adjectives in the correct order.1. We replaced the tile in our kitchen. (broken, old, white)

Number these events in chronological order from 1 (the first to happen) to 6 (the most recent).

下列（ ）赋值语句是错误的 A: Select @c=1 B: Set @c=1 C: Select @dj=单价 from book order by 单价 desc D: Set @dj=单价 from book order by 单价 desc

In order to reduce feed waste, the thickness of the feed should not exceed the trough ( ). A: 1/3 B: 1/2 C: 2/3 D: 1/4