Which two statements are true regarding the usage of the SQL*Loader utility（） You can load data into multiple tables during the same load session.。 You can load data from multiple files to a table during the same load session.。 You cannot perform selective data loading based on the values available in the records.。 You can use an export file generated by the EXPDP utility as an input data file to load the data.。 You can load data only if the input file is available on the disk and tape but not in a named pipes.。
以下哪些情况属于可以终止合同义务的不可抗力因素（） 物价波动。 战争。 地震。 征服征收。
You create the sales report and run it in the live previewer. After which change would the live previewer require the data? （） Removing column from the available list in the report wizard. 。 Removing the column from the displayed list in the report wizard. 。 Changing the display width of a column in the report wizard. 。 Adding a column to both the available list and displayed list in the report wizard. 。 Removing a column in the live previewer.&e。
19世纪末20世纪初，美国德国经济发展相对迅速的共同原因有（）。①拥有大量殖民地②大量采用新技术③大量资本输往国外④资产阶级革命运动的影响 ①②。 ②④。 ①③。 ③④。
工程队不得对监理人员有（）行为 殴打。 行贿。 漫骂。
游戏的主体性本质观，促使我们在促进和引导儿童游戏的实践中，必须以（）
