当锅炉不利用生产回水时,补给水()给水。
A、小于
B、等于
C、大于
D、不小于
参考答案:B
一定量的稀硫酸跟过量铁粉反应,为了减缓反应速率,又不影响生产氢气的总量,可向稀硫酸中加入适量的[ ]
A.(固体)
B.(固体)
C.(溶液)
D.(固体)
Ceorge Orwell, was Eric Arthur. Wrote many political novels and essays. [ ]
A. the real name
B. what his real name
C. his real name
D. whose real name