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【简答题】
()对电气设备和电力系统安全运行危害极大。 A、额定线电压 B、系统最高电压 C、过电压
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皮皮学刷刷变学霸
举一反三
【简答题】陶潜、杜甫、莎士比亚、易卜生是 , 柏拉图、卢梭、弥儿是 , 牛顿、达尔文是科学家。(2分)
【简答题】He has been in the company since 199
【多选题】属于等张收缩特点的是
A.
外加负荷恒定，肌肉收缩长度缩短
B.
外加负荷变化，肌肉收缩速度不同
C.
外加负荷恒定，肌肉收缩速度相同
D.
外加负荷恒定，肌肉收缩张力与阻力相等
E.
外加负荷恒定，肌肉收缩张力与阻力不同
F.
外加负荷恒定，肌肉收缩张力大于阻力
【单选题】The old man _______ in Shanghai, but he _______ in Jiangyan now. [ ]
A.
be born; live
B.
was born ; live
C.
is born; lives
D.
was born; lives
【简答题】George Washington Carver was born in 18. He was born a slave(). When he was still a baby, his mother was stolen. He was kept by his . All his life George loved 31 . When he was only seven ye...
【单选题】— We don't know _____. — It is said that he was born in Canada. [ ]
A.
what he is
B.
when he was born
C.
where he comes from
D.
if he lives here
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