患有过敏性疾病和寄生虫病的病人,身体中哪种白细胞的数量明显增多()。
A.中性粒细胞
B.嗜碱性粒细胞
C.嗜酸性粒细胞
D.单核细胞
E.淋巴细胞
参考答案:C
If there were no exams and parents meetings, high school life __ much enjoyable.
A.will be
B.must be
C.would be
D.would have been
在对粒级为20.0-40.0mm的碎石进行坚固性试验时,应称取试样数量为()。
A.1000g
B.1500g
C.2000g
D.500g