下列参数中，（）不是发电机与系统并网的条件中的参数。
A.相位
B.电压
C.频率
D.波纹系数
参考答案：D
____ by thedoctor's words, he made up his mind to fight against hiscancer. [ ]
A. Forced
B. Amazed
C. Inspired
D. Ordered
埋弧焊焊接电流为800安培，电压为36伏，焊接速度为60厘米/分，求此时焊缝的线能量？
