电视、示波器等电子显示设备的基本波形为矩形波和锯齿波。( )
参考答案：B
何为少尿（）
A.24小时尿量少于1000ml
B.24小时尿量少于700ml
C.24小时尿量少于500ml
D.24小时尿量少于400ml
E.24小时尿量少于100ml
We _______him on his birthday and held a party to _______it.
A．congratulated; congratulate
B．celebrated; celebrate
C．celebrated; congratulate
D．congratulated; celebrate
