10KV系统中，氧化锌避雷器较多地（）在真空开关上，以便限制截流过电压

A.串联

B.并联

An investment policy statement for a firm’s short-term cash management function would least appropriately include :（）

A. a list of permissible securities.

B. procedures to follow if the investment guidelines are violated.

C. limits on the proportion of the portfolio which can be invested in each permitted security type.