在海运实践中，以下哪些当事人有权签发提单？()

以下哪些提单在结汇时，银行将拒绝接受?( )

A．unclean B／L

B．stale B／L

C．straight B／L

D．order B／L

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！

“S．T．C；S．L．&C&S”条款是在以下哪一种货物运输提单中出现的条款? ( )

A．件杂货

B．拼箱货

C．混装货

D．整箱货

请帮忙给出正确答案和分析，谢谢！

有权签发提单的人不包括( )。

A．委托人

B．船长

C．承运人

D．经承运人授权的代理人

请帮忙给出正确答案和分析，谢谢！

If a credit requires presentation of a transport document covering transportation utilizing at least two modes of transport，and if the transport document clearly shows that it covers a shipment from the place of taking in charge and／or port，airport or place of loading to the place of final destination mentioned in the credit，UCP Article 26 is applicable．In such circumstances，a multi—modal transport document must not indicate that shipment or dispatch has been effected by only one mode of transport， but it may be silent regarding the modes of transport utilized．

请帮忙给出正确答案和分析，谢谢！