6月25日,中国高铁又添新成员,具有完全自主知识产权、达到世界先进水平的中国标准动车组被命名为()。
A.“中华之星号”
B.“和谐号”
C.“复兴号”
D.“东方红号”
参考答案:C
选择适当的词填空,使句意完整。
1. I can't _____________ (see, sea) anything.
2. This _____________ (pear, pair) of shoes is too cheap.
3. Many _____________ (child, children) like playing with snow.
4. _____________ (There, Their) are some knives.
5. She _____________ (has, have) a good friend at school.
6. We are going to _____________ (buy, bought) a dictionary tomorrow.
注水泥塞配制淡水水泥浆清水用量计算公式为()。
A、e=100×(1+ρ/3.15)/(ρ-1)
B、e=100×(1-ρ/3.15)/(ρ+1)
C、e=100×(2-ρ/3.15)/(ρ-1)
D、e=100×(2-ρ/3.15)/(ρ-1)