本规程所指动火作业,系指在生产区域进行焊接与切割作业及在易燃易爆场所使用喷灯、电钻、砂轮等进行可能产生火焰、火花和炽热表面的临时性作业。()
参考答案:错
Write _and try not to make any mistakes.[ ]
A. as careful as possible
B. as carefully as you can
C. most careful
D. more careful
在BIAS曲线中,当股价大于平均线时,则为()。
A、零乖离
B、负乖离
C、正乖离
D、乖离不存在