【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】在锅炉安装中,有关压力表说法中错误的是( )。
A.
当锅炉工作压力<2.5MPa表压时,压力表精确度不应低于1.5级
C.
表盘刻度极限值应为工作压力的1.5~3.0倍
【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】目标基准点法下,在基准点之前准备的终值( )基准点之后的现金流量折现值时,理财目标可以实现;否则不能按时实现理财目标
【单选题】蒸汽压力高于2.5MPA的锅炉,选用的压力表精度等级不应低于( )