问题
单项选择题
称重电控柜的防护等级是（）。
A.IP65
B.IP60
C.IP70
D.IP80
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
称重电控柜的防护等级是（）。
A.IP65
B.IP60
C.IP70
D.IP80
参考答案：A
| 选词填空。 | |
2. The chef _____ lots of salt on the potato chips. 3. The customer was happy _____. 4. The soup wasn't salty _____ 5. _____ an ancient Chinese legend, emperor Shen Nong _____ tea. 6. A boy _____ the river and a solider saved him. 7. This special pen _____ writing on test papers. 8. Hearing the news, the old man _____ calm. |