对氧气瓶的说法正确的是()。A、外表为白色 B、氧气使用后应全部放净 C、应倾斜放置 发布时间:2017-07-06 11:52 │ 来源:www.tikuol.com 题型:单项选择题 问题: 对氧气瓶的说法正确的是()。A、外表为白色B、氧气使用后应全部放净C、应倾斜放置D、瓶阀处应严禁沾染油脂
题型:单项选择题 从备选栏里选择适当的单词填空,完成对话。备选栏: Thanks easy doesn't wearing matterPolice: What's the 1 , kid?Sandy: I can't find my brother, Billy.Police: Take it 2 . What's he 3 ?Sandy: He's wearing a red jacket, blue pants, and yellow boots.Police: Does he wear glasses?Dongdong: No, he 4 Police: Come here, kid! Isn't that Billy?Sandy: Ah, yes! 5 a lot.Police: Sure. 查看答案