矿井机电硐室应配备有（），干粉和1211灭火器等。
A.干砂
B.水砂
C.泡沫
D.干粉灭火器
参考答案：A
There are many clubs in our school. Let me tell you what they are.
Do you like playing tennis? It’s OK if you can’t play tennis. Mr. Qing can teach you. Come and join the tennis club!
Do you like acting? Do you like to work with other young people? Do you want to be in the school play? Come and join the acting club.
Can you dance? Do you like Latin (拉丁) dance or Chinese traditional (传统的) dance? Join the dance club and dance for the Christmas (圣诞节) show.
Do you like French food? Can you speak French? Do you want to learn French? Join the French club now.
根据上面内容判断正误，正确的写（T），错误的写（F）.
小题1:Mr. Qing can teach you French.
小题2:If you join the acting club, you can act in the school play.
小题3:Christmas Day is coming.
小题4:You can learn French in the French club.
小题5:There are three clubs in the school.
某印染厂印染涤纶织物需在酸性溶液中进行．配制酸性溶液的方法是：每千克水中，加入溶质质量分数为96%、密度为1.04克/厘米3的醋酸溶液1毫升．试求：
（1）酸性溶液中溶质的质量分数是多少？
（2）假设印染后的污水中醋酸的质量分数为0.06%，用熟石灰进行中和，则每处理1吨这样的污水，理论上需熟石灰多少克？[Ca（OH）2+2CH3C00H=Ca（CH3COO）2+2H2O]．
