衬纬组织是在纬编基本、变化或花色组织的基础上，沿（）衬入一个辅助纱线形成的组织。
A.经向
B.纬向
C.横向
D.纵向
参考答案：B
喷射混凝土的冬期施工应符合哪些规定？
The author of the report is well _____ with the problems in the hospital because he has been working there for many years.
A．acquainted
B．informed
C．known
D．advised
