下班上井后,允许将矿灯带回宿舍或锁在自己的更衣箱内。
参考答案:错
补全对话。根据上文,完成下文。
1. —Hello! I'm John. What's your name?
—
—Nice to meet you, too.
—I have some chocolates.
—Oh.
—Would you like some chocolates?
—Here you are.
2. —Hello, John!
— , Mike, Tom.
—Nice to meet you, Tom.
3. —Let's share the apples.
4. — oranges are there in your box?
—Five.
喷气燃料中烃类的燃烧完全度高低顺序正确的是()
A、正构烷烃>异构烷烃>单环环烷烃>双环环烷烃>双环芳香烃>单环芳香烃
B、异构烷烃>正构烷烃>双环环烷烃>单环环烷烃>双环芳香烃>单环芳香烃
C、单环芳香烃>双环芳香烃>单环环烷烃>双环环烷烃>正构烷烃>异构烷烃
D、正构烷烃>异构烷烃>单环环烷烃>双环环烷烃>单环芳香烃>双环芳香烃