电源的型式试验包括以下测试：（） A.绝缘阻抗测试 B.接地导通阻抗测试 C.功率测
题型：多项选择题
问题：
电源的型式试验包括以下测试：（）
A.绝缘阻抗测试
B.接地导通阻抗测试
C.功率测试
D.漏电流测试
题型：多项选择题
阅读下面短文，并借助图画和上下文补充所缺信息。每空只能填写一个形式正确、意义相符的单词。
A Clever Boy
One day, Sima Guang (司马光) and his little friends were playing hide-and-seek (捉迷藏). One boy
climbed up a 1______ to hide himself. Suddenly the branch (树枝) broke off and he 2______ into the
water pot 3______ the tree. The boy couldn't get out 4______ the water pot was too high. The boys were
frightened and some of them cried. However, Sima Guang 5______ afraid. He 6______ carefully. Then a
good 7______ came to his mind. He ran away 8______ another boy and brought a big stone back. Then
he hit the pot with the stone and made a 9______ hole in it. The 10______ rushed out from the pot and the
child was saved.
