100kVA及以上的高压供电用户在电网高峰负荷时功率因数应达到0.85。 ()
参考答案:错
Is this the reason ______ at the meeting for his carelessness in his work?
A.he explained
B.what he explained
C.how he explained
D.why he explained
古代史上曾经出现过若干地跨欧亚非三洲的大帝国,下列国家中属于此范畴的有
①亚历山大帝国②罗马帝国③中国元朝
④奥斯曼土耳其帝国⑤阿拉伯帝国⑥古巴比伦王国 [ ]
A.①②③④
B.①②④⑤
C.②③⑤⑥
D.②③④⑥