对密封用的耐火混凝土有何要求?
参考答案:
做密封用的耐火混凝土视管距大小,减少6~8mm的骨料,增加3~6mm的骨料,并可适当加大水灰比,以便于浇灌和人工捣实。
根据句意及首字母提示完成句子
1. He is a f_____ basketball player.
2. Look at the s_____ on the ice! How quickly she is skating!
3. Deng Yaping was the No.1 women's s_____ player.
4. We could not have the picnic b_____ of the rain.
5. Deng Yaping joined the n_____ table tennis team in 1988.
6. Deng Yaping m_____ in English and management when she was at Tsinghua University.
如图所示的电路图中,属于串联电路的是[ ]
A.
B.
C.
D.