由于流过线圈本身的()发生变化,而引起的电磁感应叫做自感现象。
A、磁力线
B、磁场
C、电压
D、电流
参考答案:D
英汉互译。(每题1分,共10分)
小题1:由于玩太多电脑游戏,丹尼尔视力很差。
Daniel has because of playing computer games too much.
小题2:歌迷们迫不及待地想见周杰伦。
The fans to see Jay Chou.
小题3: 如果你抄袭其他人的家庭作业,我会向老师报告的。
If you copy others’ homework, I will the teacher.
小题4:有些学生痴迷于玩电脑游戏。
Some students are playing computer games.
小题5: 谨慎对待烟火是很重要的。
It’s important to be fire.
小题6: Take any book you like.
小题7: He doesn’t wake up until seven o’clock every day.
小题8: Make sure the water is not too cold or too hot.
小题9: Every dog has its day.
小题10: The garden is north-west of the zoo.
烟道发生二次燃烧,调整无效,当排烟温度超过()℃时应立即停炉。
A.200
B.250
C.300
D.400