请问大家   Combinatorial clock auctions的问题，因为这方面的东西接触的很少，网上收了找不到很好的答案，希望大家会的给我解答一下，谢谢了

    1： What is straightforward bidding in a CCA?

  :2： Will straightforward bidding always be feasible in a clock auction or a CCA? Explain.

:3：Will a bidder want to always bid straightforwardly assuming it is always feasible?

  :4：Will prices always be a monotone increasing function of the number of blocks won and the amounts bid?