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由农村综合变供电的低压配电线路的接地型式宜采用（）系统。对安全有特殊要求或纯排灌的电力网可采用IT系统。城镇公用配电变压器的低压配电线路接地型式应采用TN-C系统。同一台变压器供电的电气设备，严禁同时采用保护线（PE）和保护中性线（PEN）两种保护方式

A. TN
B. TN-C
C. TN-S
D. TN-C-S
E. TT

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The System Administrator has set up shared processors on three partitions in the p5 590 system. The shared processors have been set to uncapped. The system administrator notices that the logical partition is acting like it is capped. What is the most probable cause?（）

A. The uncapped weight has been set to 0.
B. The uncapped weight has been set to 128.
C. The processing unit for that partition was set to .1 processing units. A full processor was assigned.
D. The processing unit for that partition was set to 0.50 processing units. A full processor was assigned.

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英国的安迪·格林于1997年10月在美国内华达州的黑岩沙漠上创造了一项陆上最高速度记录，他驾驶的是一辆理查德·格林设计的推力SSC型汽车，装有罗尔斯·罗伊斯双缸喷气发动机，可产生22..68吨推力，该车是第一辆超音速汽车。请问他创造的速度记录是每小时多少公里？

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说明脑的运动机能系统的主要特点。

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执勤期计划超过（）小时，应该为客舱机组安排休息区。

A. 10
B. 12
C. 16
D. 18

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A. TN B. TN-C C. TN-S D. TN-C-S E. TT

The System Administrator has set up shared processors on three partitions in the p5 590 system. The shared processors have been set to uncapped. The system administrator notices that the logical partition is acting like it is capped. What is the most probable cause?（）

说明脑的运动机能系统的主要特点。

执勤期计划超过（）小时，应该为客舱机组安排休息区。

A. TN
B. TN-C
C. TN-S
D. TN-C-S
E. TT