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问题 单项选择题

安全阀主要性能参数为（）。

A.工程直径

B.安装高度

C.公程压力

D.体积大小

答案

参考答案：C

补全对话，情景问答
根据对话内容，将方框内符合对话情景的句子写在对话的空白处，使对话恢复完整。其中有两项是多余的。
A: Hurry up, we'll be late for the meeting.
B: Safety comes first, we must ride our bikes carefully.
A:              1                 
B:               2                
A: But there are no policemen in the street now.
B:               3                
A: OK. Now the light has turned green.
B:               4                
A: Shall we turn to the right?
B: No, this is a one-way street.
A:               5                
B: We have to ride on till we get to the next traffic lights.
You must be careful!
Where will we turn right?
Let's go across the street, Tom.
We mustn't go against the rules.
No, don't you see the green light?
Let's go now.
No, don't you see the red light?
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单项选择题

RV5+SVL＞4.0mV，可诊断为

A．左室高电压
B．左室劳损
C．右室肥大
D．双室肥大
E．左室肥大劳损
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