预防破伤风用
A、丙种球蛋白
B、类毒素或抗毒素
C、活疫苗
D、化学药品
E、灭活疫苗
下列说法错误的是()。
A.当烤烟烟叶成熟度达到成熟时,烟叶内的糖、氮、碱含量适中,且相互间比例谐调
B.当烤烟烟叶成熟度达到尚熟时,烟叶内的糖、氮、碱含量适中,且相互间比例谐调
C.当烤烟烟叶糖、氮、碱含量最高时,且相互间比例谐调
D.当烤烟烟叶生长发育充分,烟叶内的糖、氮、碱含量适中,且相互间比例谐调
此题为多项选择题。请帮忙给出正确答案和分析，谢谢！
During the medieval times, if one man covered in armor extended an open hand to another, ______.
A．the same gesture would definitely be returned
B．he was sending a signal of friendship
C．he would receive a dagger or sword
D．he was asking for a weapon
多个样本均数之间的两两比较需用哪种方法
A.t检验
B.t＇检验
C.方差分析
D.正态性检验
E.q检验
We can infer from the end of the passage that______.
A．a poet is usually insightful of and enthusiastic about life
B．Seamus Heaney felt offended by the Stirling student"s question
C．hoeing is a job requiring more physical labor than digging
D．at an old age, Seamus Heaney hoped to contribute more to poetry creation