公安机关必须置于党委实际的、直接的领导之下，严禁把( )用于党内。
A．批评手段
B．侦查手段
C．控告手段
D．建议手段
参考答案：B
根据句意及首字母提示补全单词
1. These questions are very d_____________.
2. They play football e__________ day.
3. D________ she like sports?
4. That s__________ interesting.
5. I don't w____________ TV in the evening.
6.-Let's play tennis.
-No, it's b______________.
钢轨铝热焊对坩埚有什么要求？
