由一段序列相连的氨基酸片段构成的抗原决定基()
A.构象决定基
B.顺序决定基
C.功能性决定基
D.隐蔽性决定基
E.半抗原决定基
参考答案:B
() our S/C No.2002016 dated January 8, I now in- form you that the goods will be shipped tomorrow.
A. With reference to
B. Refer to
C. With refer to
D. Referred to
为值班人员配备的救生衣应直接存放在驾驶室、机舱控制室及其他有人值班的地点。()