密闭在沼气池中的人粪尿、禽粪尿和秸秆中的有机物在厌氧细菌的作用下会分解产生[ ]
A．沼气
B．无机盐
C．高温
D．以上三项均有
A
— Can I help you, dear?
— Yeah, I don't know a banana milk shake. Maybe you can teach me. [ ]
A．what to do
B．when to make
C．how to make
D．why to do
要求减免税的进口货物在未办结有关海关手续前，报关人申请担保要求先期放行货物的，可以提交保证函的形式申请担保。 ( )
