按阀门定位器输出和输入信号的增益符号分为（）阀门定位器和反作用阀门定位器
A、多作用
B、双作用
C、单作用
D、正作用
参考答案：D
根据首字母提示完成单词
1. No students are a to go into computer house.
2. Anna wants to get her ears p____ .
3. We all d with what you said just now.
4. Don’t be s____ .He can’t tell you the truth.
5. Our teacher are s____ with themselves. They work hard and teach us so well.
PowerDesigner所包含模块中，用于数据数据分析和数据发现的模块是( )。
A．PowerDesigner AppModeler
B．PowerDesigner DataArchitect
C．PowerDesigner MetaWorks
D．PowerDesigner ProcessAnalyst
