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题目内容
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Section B
Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. The dialogues and questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D.
(6)
A．Jack can't answer the call.
B．The man has misdialed.
C．The woman doesn't like Jack.
D．Jack has got the wrong number.
更多“Section BDirections: This section is to test your ability to understand short dialogues. T”相关的问题
第3题
A．防止泵的出口液体倒流，避免事态扩大
B． 防止液体倒流使叶轮倒转，叶轮倒转会使叶轮备帽脱落产生事故
C． 防止泵出口液体倒流进入吸入口产生超压
D． 防止离心泵停车以后，出口物料倒流到吸入口而浪费能源
第7题
A、泵入口→泵体→预热阀→预热跨线→出口管线
B、泵入口→泵体→泵出口单向阀→泵出口阀→泵出口管线
C、出口管线→单向阀→泵体→入口过滤器→入口管线
D、出口管线→预热跨线→预热阀→泵体→泵入口
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