以目前的施工条件,一般地段均采用()组装作业方式。
A.沟下
B.集中
C.沟上
D.分散
参考答案:C
There’s no point in trying to ________with her because she will never change her mind.
A.agree
B.compete
C.compare
D.reason
A群链球菌的主要鉴定试验是()
A.杆菌肽敏感试验
B.CAMP试验
C.马尿酸钠水解试验
D.Optochin试验
E.胆汁七叶苷水解试验