关于党在社会主义初级阶段的基本纲领，以下说法正确的是（） ["党的十五大制定的","是对改革开放和现代化建设主要经验的科学总结","主要由社会主义初级阶段的基本目标和基本政策组成","是我党的最高行动纲领"]
电控汽油喷射系统由（）、（）和电子控制系统组成。电子控制系统由电控单元、（）和（）组成。
You are creating a Windows application by using the .NET Framework 3.5.You create an instance of the BackgroundWorker component named backgroundWorker1 to asynchronously process timeconsuming reports in the application.You write the following code segment in the application （Line numbers are included for reference only.） You need to write a code segment that reports to the application when the background process detects any of the following actions： （1）An exception is thrown （2）The process is cancelled （3）The process is successfully completed Which code segment should you insert？（） ["A","B","C","D"]
当业务量增加时，固定成本会（）。 ["增加","减少","保持不变","以上都不对"]
电源线、信号线等布放工艺的要求有。（） ["必须是整条线料","外皮完整，中间严禁有接头和急弯处","应保持其平直、整齐","绑扎间隔均匀，松紧合适","用白色扎带绑扎"]
生物转化
