关于噬菌体，正确的是A．原核细胞型微生物 B．与宿主细胞变异无_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

关于噬菌体，正确的是

A．原核细胞型微生物

B．与宿主细胞变异无关

C．可用光镜观察

D．可侵袭原核细胞型微生物

E．宿主细胞范围广

答案

参考答案：D

填空题

阅读短文，选择适当的词填空。

every, pick, sweats, too, autumn, mooncakes, like, also, for, inside

Halloween is an ___________ holiday. It means " holy evening ", and it comes
__________ October 31st. It's a holiday ___________ children. Every autumn children
__________ orange pumpkins. Then they cut faces in the pumpkins and put lights __________.
It looks __________ a head. Children __________ put on the masks and ask for __________.
The Mid-autumn Festivalis an autumn holiday,__________. The family usually sit together,
watch the moon and eat the __________.

单项选择题

路基土方施工时，当地面纵坡大于（）的深谷陡坡地段，可采用竖向填筑法施工。

A．8%

B．10%

C．12%

D．15%