对于黏附性强的粉尘颗粒，最好采用（）
A.旋风除尘器
B.湿式除尘器
C.静电除尘器
D.袋式除尘器
参考答案：B
—Could you please tell _______________________?
—Sure. Though I am a little nervous, I would love to.
A．when we shall have the graduation ceremony
B．what are you going to say at the graduation ceremony
C．where will you hold the graduation ceremony
D．if you are going to give a speech at the graduation ceremony
关于C语言程序描述正确的是( )
A．函数必须要有return语句 B．主函数必须位于程序的开头C．程序中每行只能写一条语句 D．一个程序中只能有一个主函数
