A:总电流过大
B:发生了短路
C:电压大于220V
D:用电器总功率过大
一个正方体浸没在水中,下列说法中正确的是( )
1).When did they do the survey? (last Thursday/last Friday)
2).What is the survey about? (breakfast/supper)
你可以这样开始:The students did a survey about…
Answer:____
我国耕地主要分布在( )