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当无继电保护和自动装置要求时，10(6)kV变电所专用电源线的进线开关可采用隔离开关或隔离触头。()
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对经常处于备用状态的消防泵、雨林泵、排烟风机等设备，应作为计算负荷的一部分来选择变压器。()
民问统计调查具有强制性和营利性两个特点。 ()
When he was 28, the worst difficulty of all came to him. He began to notice a strange humming(嗡嗡声) in his ears. At first he paid little attention; but it grew worse, and at last he consulted doctors. (46) They gave him the worst news any musician could bear: he was gradually going deaf. Beethoven was in despair; he was sure that he was going to die.
He went away to the country, to a place called Heiligenstadt, and from there he wrote a long farewell letter to his brothers. He longed to die, and said to death, "Come when you will, I shall meet you bravely."
In fact, Beethoven did something braver than dying. He gathered his courage and went on writing music, though he could not hear what he wrote. He wrote his best music, the music we remember him for, after he became deaf. The music he wrote was very different from any that had been composed before.
To say that Beethoven was "in despair" means that he______.
以上药物中属于芳酸酯类局麻药的是E．
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