阻尼电阻冒火,供电装置出现偏励磁是电气方面的情况。()
参考答案:错
脊柱结核好发年龄是
A.婴幼儿
B.10岁以下儿童
C.青壮年
D.中年
E.老年
The audience waited until the curtain rose and then______laughter at the sight of the funny actor.
A.burst out
B.burst into
C.broke into
D.began with