What command would be used to restart the mail daemon？（） ["sendmail -bi","refresh -s sendmail","restart -a sendmail","\/etc\/sendmail.cf -stop \/etc\/sendmail.cf -start"]
万能寿险保单持有人可按自己意愿选择缴纳保费的方式的前提是（） ["该保单的现金价值足以支付保单的相关费用","该保单的现金价值足以支付保单的风险保费","该保单的已交保费足以支付保单的相关费用","该保单的已交保费足以支付保单的风险保费"]
Which command will list ODM class descriptions to provide the format needed to create a new class?（） ["odmadd","odmget","odmshow","odmcreate"]
组合式制动梁检修限度为（）。 ["l521～1527mm","1523～1530mm","1523～1534mm","1520～l528mm"]
A Business Partner has proposed an IBM System Storage DS8700 that will have several AIX， Windows， and Sun Solaris servers attached via SAN. The customer has asked for detailed documentation on the steps needed to install the latest adapter drivers. What is the best document the Business Partner can suggest to accomplish this requirement（） ["the IBM System Storage DS8000 Interoperability Matrix","the IBM System Storage DS8000 Introduction and Planning Guide","the IBM System Storage DS8000 Host System Attachment Guide","the IBM System Storage DS8000 User’s Guide"]
请简略描述安全链与变桨系统之间的关系
