【单选题】下列属于特异性免疫的是( )
B.
唾液中溶菌酶的杀菌作用、血液中白细胞的吞噬作用
C.
接种卡介苗预防结核病、患过天花的人不会再患天花
D.
血液中白细胞的吞噬作用、接种流感疫苗预防流感
【单选题】As the saying goes, "Where there is a will, there is a way. " People who want to make things better can do so if only they are strongly________.
【简答题】"savory" is a better know word for _______________.
【简答题】一质点沿 x 轴运动其速度与时间的关系为v = 4 + (SI) , 当 t = 3 s 时, x = 9 m ,则质点的运动学方程为 ______________________.
【判断题】皮肤黏膜的屏障作用、补体和溶菌酶溶菌作用属于非特异性免疫。( )
【单选题】How many linkings should be used when speaking "Better is a neighbour that is near than a brother far off." in a native manner?
【单选题】Which of the following is a better translation for the sentence "The device is shown schematically in Fig.2."?
【单选题】Which translation of the phrase "a telling lesson" is better?