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【多选题】
能引起速发型超敏反应的物质是A.
破伤风抗毒素
B.
青霉素
C.
屋尘
D.
牛奶
E.
豕草花粉
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【单选题】中断控制寄存器TCON中，位IT0控制外部中断0的触发信号形式，若IT0=1时，当P3.2引脚出现（ ）时，会向CPU申请中断
A.
低电平
B.
高电平
C.
上升沿
D.
下降沿
【简答题】给出至少5种复合逻辑门电路的名称?
【简答题】I was blind, but I was ashamed of it if it was known. I refused to use a white stick and 36 asking for help. After all, I was a age girl, and I couldn’t bear people to look at me and think I was n...
【单选题】The outbreak of severe acute respiratory syndrome (SARS, 非典), which has no known cure for 【C1】______ afflicted by it, has brought widespread panic to Singaporeans and has 【C2】______ altered the patter...
A.
friends
B.
relatives
C.
victims
D.
children
【单选题】中断控制寄存器TCON 中位IT0,控制外部中断0的触发信号形式,若IT0=0时,当P3.2引脚出现( )时,会向CPU申请中断,
A.
下降沿
B.
上升沿
C.
低电平
D.
高电平
【单选题】Singapore, known as a gourmets paradise, do not have to go out here, you can eat ______ food.
A.
abnormal
B.
absurd
C.
exotic
D.
erroneous
【单选题】中断控制寄存器TCON中位IT0，控制外部中断0的触发信号形式，若IT0=0时，当P3.2引脚出现（ ）时，会向CPU申请中断。
A.
下降沿
B.
上降沿
C.
低电平
D.
高电平
【简答题】遇有火灾、地震、台风、冰雪、洪水、泥石流、沙尘暴等灾害发生时，巡线有何要求？
【简答题】阅读理解 John Denver, the writer and composer of Goodbye Again, is one of the best-known American folk singers and song writers. He is a country boy by birth and still prefers the mountains of Colorado to...
【单选题】遇有火灾、地震、台风、冰雪、洪水、泥石流、沙尘暴等灾害发生时，如需对线路进行巡视，应制订必要的安全措施，并得到设备运行管理单位分管( )批准。
A.
组长
B.
领导
C.
专责
D.
班长
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