从保税区输往保税区的法定检验检疫的对象,列入强制性产品认证目录的,应当提供相应的认证证书。
参考答案:错
On AIDS Day, the minister of Health Department demanded that the problems _____ paid special attention to.
A.referred to being
B.referred to be
C.refer to being
D.refer to be
物质的量为0.10 mol的镁条在只含有CO2和O2混合气体的容器中燃烧(产物不含碳酸镁),反应后容器内固体物质的质量不可能为 [ ]
A.3.2g
B.4.0g
C.4.2g
D.4.6g