锅炉的自动控制装置,在点火升汽阶段,应手动操作,待锅炉投入正常运行再切换为自动操作。
参考答案:对
I don't want to buy this pair of black shoes. I want to buy ________. [ ]
A. that one
B. that pair
C. that ones
D. that a pair
在同刑事犯罪分子作斗争中,如果片面强调严肃而忽视了谨慎,就会伤害无辜,犯扩大化的错误;如果片面强调谨慎而忽视了严肃,就会放纵坏人,犯打击不力的错误。( )