若用明胶培养基培养细菌,其目的在于观察细菌能否液化明胶,则应在何温度培养()
A.30℃
B.25℃
C.22℃
D.35℃
E.37℃
参考答案:C
The old lady was ____ by the businessman and stupidly gave him all her money.
A.taken on
B.taken out
C.taken off
D.taken in
《国家电网公司防止电气误操作安全管理规定》明确指出,“五防”功能中除()现阶段可采取提示性措施外,其余四防功能必须采取强制性防止电气误操作措施。
A.防止误分、误合断路器
B.防止带负荷拉、合隔离开关或手车触头
C.防止带电挂(合)接地线(接地刀闸)
D.防止带接地线(接地刀闸)合断路器(隔离开关)
E.防止误入带电间隔