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【多选题】
自动喷水灭火系统设置场所的火灾危险等级不包括（ ）。A.
轻危险级
B.
一般危险级
C.
较大危险级
D.
重大危险级
E.
严重危险级
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【简答题】The Cherokee Indians (彻罗基印第安人) lived in different states in the southeastern and southern parts of the United States. Like many other languages, Cherokee was originally only a spoken language, that is...
【单选题】Passage 2: The Cherokee Indians ( 彻罗基印第安人 ) lived in different states in the southeastern and southern parts of the United States. Like many other languages, Cherokee was originally only a spoken lang...
A.
Sequoyah and His New Alphabet
B.
A Language for All Indians
C.
The Cherokee Indians
D.
A New Indian Language
【单选题】已知正弦交流电压 u= 141 sin ( 314 t - 60 0 )V ,则其电压的有效值相量为 ( )
A.
= 141/ 60 0 V
B.
= 141 / - 60 0 V
C.
= 100/ 60 0 V
D.
= 100 / - 60 0 V
【简答题】Abraham Lincoln, sixth president of the United States, was born in Kentucky in 1809, and died in Washington in 1865, the day after he had been shot by a Southern sympathizer. He is classed with Wa...
【简答题】Passage One Abraham Lincoln, sixth President of the United States, was born in Kentucky in 1809, and died in Washington in 1865, the day after he had been shot by a Southern sympathizer. He is cla...
【单选题】听力原文：Were you born at home? (A) No, I was born in a hospital. (B) The barn is behind the house. (C) No, I'm never bored at home. (34)
A.
B.
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