交流电压的量程有10V,(),500V,三档。用毕应将万能表的转换开关转到高电压档,以免下次使用不慎而损坏电表。
A、380V
B、250V
C、100V
D、220V
参考答案:C
While cleaning the snow on the road, _________.
A.a wallet was found on the ground.
B.a wallet appeared on the ground.
C.I found a wallet lying on the ground.
D.I found a wallet laid on the ground.
胚乳中下列哪种物质含量最多()。
A.维生素
B.蛋白质
C.碳水化合物
D.脂肪
E.无机盐