可能发生意外释放能量的载体或危险物质称为( )。
A.第一类危险源B.第二类危险源C.第三类危险源D.第四类危险源
参考答案:A
句型转换
1. He didn’t see anything in her room. (同义句)
He ________ ________ in her room.
2. Let’s visit my math teacher. (同义句)
________ ________ visiting my math teacher?
3. She showed me her scarf. (同义句)
She ________ her scarf ________ ________.
4. He doesn’t mind Sports News. (就划线部分提问)
________ ________ he ________ ________ Sports News?
5. He put his books there this morning. (一般疑问句)
________ he ________ his books there this morning?
车身新板件的更换,必须在相连接配合的板件彻底修复后进行。