How did the author feel about the power failure at first？
Angry but excited.
B. Irritated but relaxed.
C. Worded and uneasy.
D. Restless and anxious.
查看答案
与气体相比，粉尘爆炸的感应期()。
A. 较长
B. 较短
C. 与气体一致
D. 不确定
Ways to protect your identity include
A. freezing your credit record.
B. accepting pre-approved credit offers.
C. shredding certain letters and documents.
According to the author, profits also make it hard to distinguish between various management ideas because ______
A. business prospects are changing fast
B. all business ideas have proved all right
C. economy has grown steadily in the past seven years
D. there exist great competitions in markets
车间内对机器进行合理的安全布局，可以使事故明显减少。布局时要考虑的因素不包括()。
A. 空间
B. 车间内颜色
C. 照明
D. 管、线布置
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