按桩身完整性类别分类，桩身有轻微缺陷，不会影响桩身结构承载力的正常发挥的桩属于（）。 Ⅰ类桩。 Ⅱ类桩。 Ⅲ类桩。 Ⅳ类桩。
税收优惠的形式包括（）。 减免税。 税收抵免。 递延纳税。 出口退税。
In the data model you created this query: SELECT ID_no, description, price, quantity, manufacturer_ID FROM inventory Next you click and drag the manufacturer_ID column out of and above the default group. You needed to sort the child group by ID_number. How could you accomplish this task? （） Add an order by clause to the query. 。 In the data model double click the ID_number column and alter the break order. 。 In the layout model double click the ID_number filed and later the print direction. 。 Default the layout, choose a master/detail report style and select ID_number as the break order.。
From SQL*Plus, you issue this SELECT statement: SELECT* FROM order; You use this statement to retrieve data from a data table for （）. Updating。 Viewing。 Deleting。 Inserting。 Truncating。
基本养老保险基金仅由用人单位和个人缴费组成。
You lost the PRODSTD tablespace， which was read-only. The tablespace was read-only when the last backup was taken. How would you recover the tablespace？（）
