简述滞期费和速遣费的含义。

Whichofthefollowingcoveragedoesnotcoverpartiallossordamageresultingfromnaturalcalamities?____

Logisticaloperationscanbedividedinto（）.

Thefreightforwarderassiststheconsigneeinpursuingclaimsagainstthe____forlossofthegoodsordamagetothemifnecessary.

航空运输的特点有()。