根据《UCP500》规定,在规定装运期时,如使用-了“迅速”、“立即”、“尽速”或类似词句者。银行将不予置理。( )
参考答案:对
I'm sorry that I have kept you _____ me so long. [ ]
A. waiting
B. to wait
C. waiting for
D. to wait for
述被覆上皮有何特点?