问题
单项选择题
灭火器上压力表最大量程应为20℃时工作压力的（）倍。
A、1.2-1.5
B、1.5-2.5
C、2.0-2.5
D、2.5-3.5
答案
参考答案：B
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灭火器上压力表最大量程应为20℃时工作压力的（）倍。
A、1.2-1.5
B、1.5-2.5
C、2.0-2.5
D、2.5-3.5
参考答案：B
| 根据对话内容，从方框中选出正确的单词或短语补全对话。 | |
Jane: 2. , what kind of party is it? Michael: You see the New Year is coming, we hold a party to 3. it. Jane: That sounds exciting. What time does it start? Michael: Half past six, by the way, would you like to 4. something at the party? Jane: I can 5. ballet, is that OK? Michael: Sure, it's great! |