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【简答题】
I did something wrong today. While at the beach this afternoon. I met aboy called Bob We talked a lot. He said that it was fun playing on the cliffs ( 悬崖 ).I told him that I was not allowed to go near that place( Mum and Dad had alwaystold me it was dangerous to play there). He called me a coward. I wanted toprove to him that I was just as brave, so I agreed to go with him We wanted to make our way down to explore ( 探索 )thearea. so Bob started to climbdown and I followed him. Unluckily. some rockscame down after us. One of them nearly hit my head. We could not get back up.We shouted and shouted for help. but for a long time no help came. I was really scared. I wanted to cry. Then, we heard some sounds. Someone had heard us. Awoman tied ( 系 )a rope around herself while aman at the cliff top held the rope. She made her way down to save us. My parents were relieved ( 宽慰的 )thatI was unhurt, but they were angry that I had done such a risky thing. Iapologized and promised that I would not do anything like that again.
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【单选题】旧石器时代出现的( ),是人类最早的精神生产产品之一。
A.
装饰品
B.
石块
C.
壁画
D.
彩陶
【单选题】我们所使用的单片机实验箱有()个MCU
A.
1
B.
2
C.
3
D.
4
【多选题】三极管的放大条件为()。
A.
发射结正偏
B.
发射结反偏
C.
集电结正偏
D.
集电结反偏
【单选题】三极管放大区的放大条件为 ( ) 。
A.
发射结正偏,集电结反偏
B.
发射结反偏或零偏,集电结反偏
C.
发射结和集电结正偏
D.
发射结和集电结反偏
【多选题】下列各项中,应计入管理费用的有( )
A.
管理人员工资及福利费
B.
在建工程人员的工资及福利费
C.
业务招待费
D.
技术转让费
【多选题】三极管的放大条件为(  )。
A.
发射结正偏
B.
发射结零偏或反偏
C.
集电结正偏
D.
集电结反偏
【单选题】三极管放大区的放大条件为( )。
A.
发射结正偏
B.
集电结反偏
C.
发射结反偏或零偏
D.
集电结反偏
【多选题】下列各项中,应计人管理费用的有( )。
A.
企业等建期间发生的开办费
B.
企业行政管理部门的办公费
C.
企业专设销售机构的业务费
D.
业支付的年度财务报告审计费
【单选题】Thinking that goals are not difficult to reach______.
A.
prepares people better for challenges
B.
prevents people from shying away from hardships
C.
helps people cope with difficulty calmly
D.
significantly raises the possibility of failure
【简答题】三极管的放大条件为发射结正向偏置,A. 集电结反向偏置
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