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【简答题】
According to a new Ministry of Education survey, students’ safety has become a big problem. Nearly 50 percent of students say they are worried about robbery(抢劫) on the way to and from school. Now in many big cities in China, some schools have taught an unusual lesson: self-protection(自我保护) . Students like this lesson as there are no exams or boring classes. And they can learn how to save lives and know how to stop danger before it really happens. Chen Haoyu, a teacher at Beijing No.25 Middle School and a self-protection expert(专家),gives young students advice on how to deal with danger. If you are robbed(抢劫), keep calm. If you can’t cry for help or run away, give the robber your money. Try to remember what the robber looks like and tell the police. If you are in a traffic accident and a car hurts you, you should take down the car number. If it is a bicycle, try to contact your parents before you let the rider go. This is because you don’t know how seriously you are hurt. If it is raining hard and there is lightning(闪电), don’t stay in high places and keep away from trees. When there is a fire, get away as fast as you can. Put wet things on your body and try to find an exit(出口). Do not take the lift! If someone is drowning(溺水) but you can’t swim, don’t get into the water. Cry out for help. Remember that danger is never as far away as you think. Take care of yourself at all times! 小题1:Why do students like the self-protection lesson? A.Because there is advice on exams. B.Because they can learn how to protect themselves. C.Because they like self-protection experts. D.Because they are free to do anything during the lesson. 小题2:The underlined word “contact” means_______. A.end up B.think of C.search for D.get in touch with 小题3:If your house is on fire, you must_______. A.put dry things on your body B.run quickly and take the lift C.run away and find an exit as quickly as you can D.take everything you have and then run away 小题4:If you see a child fall into the river but you can’t swim, you_______. A.should cry out for help B.can jump into the river and save him C.can do nothing D.should telephone the doctor
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【单选题】鱿鱼蛋卷装饰时采用的是( )。
A.
中心覆盖法
B.
中心扣入法
C.
中心摆入法
D.
中心摆入法
【简答题】实时系统中的优先级倒置是指 ( 1 )
【单选题】灰体的辐射力总是 同温度下黑体的辐射力。
A.
大于
B.
等于
C.
小于
D.
不等于
【单选题】12-1. 实时系统中的优先级倒置是指( )。
A.
(1)优先数越大优先权越低
B.
(2)优先权低的进程优先获得CPU
C.
(3)高优先级进程被低优先级进程延迟或阻塞
D.
(4)正在执行的高优先权进程老是被低优先权的进程抢占CPU
【简答题】鱿鱼蛋卷装饰时采用的是( )。
【单选题】灰体的辐射力总是( )同温度下黑体的辐射力。
A.
大于
B.
等于
C.
小于
D.
不确定
【单选题】某男孩色盲,他的祖父和父亲均为色盲,祖母、母亲和外祖父均色觉正常,则该男孩色盲基因的传递途径是( )
A.
外祖母→母亲→男孩
B.
祖父→父亲→男孩
C.
祖母→父亲→男孩
D.
外祖父→母亲→男孩
E.
祖父→母亲→男孩
【判断题】在相同温度下,黑体的辐射能力总是大于灰体的辐射能力。
A.
正确
B.
错误
【判断题】实时系统中的优先级倒置是指高优先级进程被低优先级进程延迟或阻塞。
A.
正确
B.
错误
【单选题】12-1. 实时系统中的优先级倒置是指( A )。
A.
(1)优先数越大优先权越低
B.
(2)优先权低的进程优先获得CPU
C.
(3)高优先级进程被低优先级进程延迟或阻塞
D.
(4)正在执行的高优先权进程老是被低优先权的进程抢占CPU
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