运管机构发现车辆超载的，应当采取（）措施。
A.立即制止
B.责令旅客改乘
C.责令卸载
D.立即放行
参考答案：A, B, C
Barack Obama delivered a speech to 500 local youths during his visit to China, many of were from Fudan University and Tongji University.
A．them
B．whom
C．which
D．those
在现行的PC机中，常用的16位系统总线是()。
A．PC/XT总线
B．PC/AT总线(ISA总线)
C．EISA总线
D．IEEE-488总线
