【简答题】I spoke to her in/at the party. ____
【单选题】某反应的微观示意图如下(一种小球代表一种元素的原子),下列说法错误的是
【单选题】额定蒸汽压力小于2.5MP的锅炉,选用的压力表精度等级不应低于()。
【单选题】下列说法错误的是
D.
规划目录结构时 , 应该在每个主目录下都建立独立的 imsges 目录
【单选题】中压容器所选用的压力表的精确度不应低于()级。
【单选题】下图是一定条件下某化学反应的微观模拟示意图,下列说法错误的是
【单选题】听力原文:M: Where did you learn to speak German and French? W: In Europe. I've moved to Frankfurt, Germany when I was 14. My dad was in the army then. Most of my friends were German and I usually spoke Ge...
A.
She learned it from her friends.
B.
She took French lessons at school.
C.
She learned it from her father.
D.
She took French lessons in the army.
【单选题】热水锅炉的压力表应选用( )级精度的压力表。