During the Spring Festival, people also paste all sizes of “Fu” characters (福) on their doors, walls and lintels. 
正确
错误

在汽车上，蓄电池和发电机只要有其中之一作为电源就可以了。 A、正确 B、错误

单项选择题在汽车上，蓄电池和发电机只要有其中之一作为电源就可以了。
A、正确
B、错误

The Imperial Civil Service Examination started in the _...

问答题The Imperial Civil Service Examination started in the _____ Dynasty, and was finally abolished in 1905 during the Qing Dynasty

理想介质分界面的垂直入射波在入射介质中的合成波是驻波。（  ）A．错误 B．正确

不定项选择理想介质分界面的垂直入射波在入射介质中的合成波是驻波。（  ）