蒸压加气混凝土砌块、轻骨料混凝土小型空心砌块不应与其他块体混砌,不同强度等级的同类块体也不得混砌。
参考答案:对
根据句意和汉语提示填写单词, 使句子完整通顺.
1. The children _____ (亲吻) their grandma good night.
2. She stood up and _____ (向······打招呼) me with a happy smile.
3. His attitude _____ (对于) me has changed.
4. The president _____ (摇动) hands with the old lady and smiled.
5. They _____ (鞠躬) politely before the king.
6. China which is our mother _____ (国土) is one of the largest countries in the world.
7. We _____ (到达) home late last night.
工作零线断开会造成三相电压不平衡,不会烧坏三相电气设备。