卡扣封识按其形式分为5种型号，即A，B1，B2，C，D。（）_爱下问搜题

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问题判断题

卡扣封识按其形式分为5种型号，即A，B1，B2，C，D。（）

答案

参考答案：错

填空题

选词填空，每空一词，注意使用其适当形式。

plan , go out of , cut , open, carry, believe

1. He helped me________ the heavy box.
2. Mr. Black had the gardener________ some flowers in his
garden.
3.I noticed him________ the house.
4. What he said nearly made me________ the story.
5.I asked Grace_________ a pumpkin with a knife.

问答题简答题

简述CRH2型动车组制冷剂循环系统由哪些部件组成。