变电站（所）倒闸操作必须由两人执行，其中对设备熟悉者做监护人。
参考答案：对
The number of people invited __________ fifty, but a number of them __________ absent for different reasons
A．were ; was
B．was ; was
C．was ; were
D．were ; were
典型表现为意识障碍和自动症（）
A.Jackson发作
B.精神性发作
C.复杂部分性发作
D.失神发作
E.全面性强直-阵挛发作
