With reference to a radial piston pump, which one of the following statements is false?（） ["Surrounding the fixed shaft is a hollow shaft","This hollow shaft carries radial bores","Each bore is fitted with a well-lapped plunger","There are always even numbers of bore"]
各行社应当根据自身业务发展情况和风险管控能力确定合作的保险公司数量，原则上一家行社与寿险和财险公司合作的数量分别不得超过（）。 ["一家","两家","五家","五家以上"]
太阳能光伏产业链包括哪些？
渠道绩效评估可以采用多种财务指标，作为评价渠道系统获利能力的主要指标之一，渠道系统当期利润与当期销售收入之间的比率称为（）。 ["资产收益率","销售利润率","投资收益率","资产周转率"]
战勤保障大队抢险救援靴储备数量为50双。
单晶硅太阳能电池加工包括哪些环节？
