半导体材料的主要晶体结构有（）型、闪锌矿型、（）型。
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在纸浆的贮存中，常用的贮浆设备为浆池，按其贮存纸浆的浓度可分为（）和（），按浆池结构可分为（）和（）
While deploying a new application module, the software vendor ships the application software along with appropriate SQL plan baselines for the new SQLs being introduced. Which two statements describe the consequences?（）
A. The plan baselines can be evolved over time to produce better performance.
B. The newly generated plans are directly placed into the SQL plan baseline without being verified.
C. The new SQL statements initially run with the plans that are known to produce good performance under standard test configuration.
D. The optimizer does not generate new plans for the SQL statements for which the SQL plan baseline has been imported.
“Stand by engine” means （）.
A. prepare to stop the engine
B. assemble an engine on its bedplate
C. make an engine ready for starting
D. make an engine run steadily
劳动力国际间流动的形式主要有（）。
A. 单纯的劳动力输出
B. 对外工程承包
C. 海外移民
D. 人口贩卖
E. 开办合资企业
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