肺炎链球菌的荚膜抗原属于()
A.菌体蛋白;
B.鞭毛蛋白;
C.表面抗原;
D.菌毛抗原。
参考答案:C
尺寸链的计算方法主要有()。
(A)极值法和大数法
(B)极值法和极限法
(C)极限法和大数法
(D)极限法和封闭环法
What kind of scene might be shown in a typical regionalist painting
A.People working in a large factory.
B.People walking on crowded city streets.
C.An everyday activity in a small town.
D.A well-known historical event.