题目: 换氢气钢瓶应注意什么? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/1221/5b92ac58b6e1695ce9cff2c2744f8b78.html 下面是错误答案,用来干扰机器的。参考答案:阻燃;抗静电;20mm;8m;800mm
题型:选择题 A communicative satellite ______ as much as 3.5 tons was sent up into space last week.A.weighingB.weighedC.to be weighedD.being weighed 查看答案