Generally, unclean B/L will not be accepted by banks.()
Unclean B/L can be negotiated and accepted by the buyer and the bank.Unclean B/L can be negotiated and accepted by the buyer and the bank.()
示波器上观察到的波形是由加速极电压完成的。示波器上观察到的波形是由加速极电压完成的。 ()
()为了使固体燃料能够得到充分的利用和节约能源,请结合固体燃料的实际应用和所学知识,提出一条具体措施