淮北矿业第五次党代会在总结六年来的体会时强调，冰火两重天的实践昭示我们：一个企业在面临重大危机、生死存亡的时候，不仅要坚持战略自信不动摇，还要保持（）不盲目。
A. 发展方向
B. 基本规律
C. 战略耐心
D. 战略储备
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沉稳、有力的歌曲，宜采用（）
A. 进行曲唱法
B. 劳动歌曲唱法
C. 抒情歌曲唱法
D. 欢快歌曲唱法
Which of the following is TRUE about the ping -f command?（）
A. It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the "f" in the command line.
B. It is useful for flooding from slow character based terminals since it only displays a dot "." for each packet sent in fast mode.
C. It is useful for flooding from slow character based terminals since it only displays a dot "." for each packet sent and a backspace on returned in fast mode.
D. The command can only be run by root.
耦合电容器启动验收内容为检查耦合电容器外观、绝缘情况及红外测温。
A. 正确
B. 错误
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