【单选题】The workers' demands are _____ moderate; they are asking for only a small increase in their wages.
【单选题】The workers' demands are ______ ; they are taking for only a small increase in their wages.
【单选题】The workers' demands are ______; they are asking for only a small increase in their wages.
【单选题】The boss's promise to increase the workers' pay was a ______ to union demands.
【单选题】下列有关人体免疫的叙述,正确的是 [ ]
B.
艾滋病病人的免疫系统受损,可能导致恶性肿瘤的发病率大大提高
C.
预防接种的主要目的就是在机体内产生特定的抗体
D.
抗体与某单细胞的病菌结合抑制该病菌的繁殖属于细胞免疫
【单选题】某市1974年238名居民的发汞量(μmol/kg)如下,则该地居民发汞值得95%医学参考值范围是( ) 发汞值 15~ 35~ 55~ 75~ 95~ 115~ 135~ 155~ 175~ 195~215 人数 20 66 60 48 18 16 6 1 0 3