皮皮学，免费搜题
登录
搜题
【判断题】
生产环境和劳动过程中的危害因素可以分为化学性因素、物理性因素和生物性因素三个方面。化学性因素包括毒物、粉尘等；物理性因素包括噪声、振动、高温、电离辐射等；生物性因素包括致病微生物和寄生虫等。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】I'm not ready yet; can you ______ a minute?
【单选题】Speaker A: ________________ Speaker B: Um, I'm not ready yet.May I have a look at the menu?
A.
Do you want to eat out?
B.
Are you happy today?
C.
Can I take your order,now?
【判断题】Vegetarian
foods are sold very well, especially popular in India, China, Mexico, Italy and
Japan.
A.
正确
B.
错误
【单选题】We didn't get the Snoopy doll because they had been ______. [ ]
A.
sold of
B.
sold off
C.
sold out
D.
sold over
相关题目：