______属于卖方交货地点在出口国装运港或启运地的术语。
A.FCA B.FAS C.DDU D.DAF
参考答案:A
梅毒患者出现一期临床症状,检查梅毒螺旋体的最适标本是()
A.局部淋巴结抽出液
B.梅毒疹渗出液
C.下疳渗出液
D.动脉瘤组织
E.脊髓痨组织
If n is an integer between 2 and 100 and if n is also the square of an integer, what is the value of n ?() (1)n is the cube of an integer. (2)n is even.
A.条件(1)充分,但条件(2)不充分.
B.条件(2)充分,但条件(1)不充分.
C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.
D.条件(1)充分,条件(2)也充分.
E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.