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【单选题】
150V的恒压源为额定值50W/50V的负载供电,如果要是负载额定工作,则需要串联的分压电阻为()A.
50欧姆
B.
100欧姆
C.
150欧姆
D.
200欧姆
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举一反三
【单选题】下列诗句所涉及的节日按时间先后顺序排列正确的一项是( ) 1谁做冰壶浮世界,最怜玉斧修时节。 2莫道不销魂,帘卷西风,人比黄花瘦。 3东风夜放花千树,更吹落,星如雨。 4饮罢一杯酒雄黄,闻得青衣粽子香。 5人乞祭余骄妾妇,士甘焚死不公侯。 6柔情似水,佳期如梦,忍顾鹊桥归路。
A.
．①③⑤
B.
．②④⑥
C.
．④⑥①
D.
．⑤③②
【单选题】When we speak to people, we should be ___.
A.
as polite as possible
B.
as polite as possibly
C.
as politely as possible
D.
as politely as possibly
【单选题】2 When we speak to people, we should be .
A.
as polite as possible
B.
as polite as possibly
C.
as politely as possible
D.
as politely as possibly
【简答题】读对话,选择句子补全对话 A.No,it's Sally.Have you finished your homework yet? B.Of course,I'd love to.When and where shall we meet? C.Hello.May I speak to Susan? D.Let's make it half an hour later. Sally : 1.___...
【简答题】虚劳里急，悸，衄，腹中痛，梦失精，四肢酸疼，手足烦热，口干咽燥，______主之。
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