使用堵漏毯时应将有麻绒的一面:()
A.向外
B.贴向漏洞处
C.向上
D.向下
参考答案:B
酸再生烧嘴点火不成功的原因。
―________ for Beijing?
―Yes. And I’ll come back in three months.
A.Have you left
B.Are you leaving
C.Do you leave
D.Did you leave