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【单选题】
银行营业场所和文物系统博物馆的备用电源的容量应能保证入侵报警系统正常工作()小时。A.
12
B.
24
C.
36
D.
48
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【单选题】下列不属于母犬妊娠的表现有( )
A.
乳腺发育胀大，有蜡光
B.
不再发情，阴道粘膜苍白色
C.
外阴潮红，有多量带红色粘液流出
D.
触诊腹壁，可摸到乒乓球大小的硬块
【简答题】Nelson is respected and admired across the world. And to South Africans he is a superstar. He is a hero who shocked the world by fighting for peace between races, despite the 27 years he spent...
【单选题】对一台不经常起动且起动时间不长的电动机的短路保护,熔体的额定电流/RN应大于或 等于( )倍电动机额定电流“。
A.
4〜7
B.
1.5 -2.5
C.
1 ~2
D.
1
【判断题】Nelson Mandela believed that black people had the same rights as white people in South Africa.
A.
正确
B.
错误
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