将交流铁心线圈的铁心截面积增大时,其它条件不变则线圈中电流和磁通()。
A.I不变、Φ增大
B.I增大、Φ不变
C.I减小、Φ减小
D.I减小、Φ不变
参考答案:D
四、语法填空 (20分)
May Day is coming. Our class have had a __1__about what to do during the holiday. Some are in favour of staying at __2__. They think it’s both convenient and 3 . What’ more, they can save___4___for other purposes. But they will lose the chance of getting to know the outside world.
___5___, others prefer to go out for traveling since it can increase their____6___ and broaden their horizons. But they will spend more money and meet some difficulties while 7 .
In my opinion, it would be much __8__to stay at home , for I can do_9__I like, such as reading books, watching TV, and helping my parents _10__housework.
2009年6月27日,十一届全国人大常委会第九次会议审议通过了《农村土地承包经营纠纷调解仲裁法》等两部法律。通过了《全国人民代表大会常务委员会关于废止部分法律的决定》,共废止了8部法律和有关法律问题的决定。这表明
A.在全国人大闭会期间,立法权全部由全国人大常委会行使
B.全国人大常委会行使国家立法权
C.全国人大常委会是最高国家权力机关
D.全国人大常委会可以废除一切不符合时代要求的法律