天平室的相对湿度应保持在()。
A.55%~75%
B.50%~80%
C.30%~80%
参考答案:A
The maths teacher asked Alice _____ yesterday. [ ]
A. why she misses school
B. why does she miss school
C. why she missed school
D. why did she miss school
(二)江苏一企业进口手册C23254450576上三项PC/ABS树脂,法定计量单位为“千克”,非法检商品。
中华人民共和国海关进口货物报关单
下列一张报关单中有20个已填(包括空填)栏目(标号A~T),请根据提供的单据指出其中的第四处填制错误。