What is the primary use of the IBM Configuration & Options Guide （COG）？ （）
A. IBM System x ServicePac part number look up
B. Operating system and part number look up
C. General server information and part number look up
D. Software compatibility chart
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Is considered to be one of the detainable deficiencies under the STCW Convention（）.
Absence, substantial deterioration or failure of proper operation of the cargo deck area fire protection on tanker
B. Absence, non-compliance or serious deterioration of lights, shapes or sound signal
C. Absence or failure of proper operation of the radio equipment for distress and safety communication
D. Absence in a watch of a person qualified to operate equipment essential to safe navigation, safety radio communications or the prevention of marine pollutio
接待员在同时接待多位客人时，可以用（）向客人示意，所使用的标准接待语是（）。
依据《建筑结构荷载规范GB50009-2012》中建筑结构设计时，其荷载代表值是怎样规定的？
SAS用什么命令定义变量标签？变量标签处于程序的第几行？
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