【判断题】Let’s to confirm the reservation information, a table in the main dining lobby for three. Right?
【简答题】substr()函数用于获取字符串中的子串,则substr('itcast',1,3) 的返回值是【】。
【单选题】The fork is the main table utensil in China.
【简答题】substr()函数用于获取字符串中的子串,则substr('import',1,3)的返回值是 。
【判断题】A table in the main dining lobby will be fine.
【判断题】Thus in the main groups of the periodic table, basic properties increase on descending a group because the elements become more electropositive and more ionic.
【单选题】(W: Would you like a table in the main hall or in a private room, sir?
A.
The main hall will be fine.)
B.
at is the possible relationship between the two speakers?
D.
shop assistant and customer
F.
receptionist and customer
【判断题】卷积的方法只适用于线性时不变系统的分析。( )
【简答题】某地A、B两个农贸市场三种主要蔬菜价格及销售额资料如表: 品 种 价 格 (元/千克) 销售额(万元) A 市场 B 市场 甲 乙 丙 0.30 0.32 0.36 75.0 40.0 45.0 37.5 80.0 45.0 试计算比较该地区哪个农贸市场蔬菜平均价格高?答( )。