采取预防性技术措施预防危险、危害发生的对策措施是()
A.采用无害工艺技术
B.使用安全阀
C.消除静电装置
D.设置声光报警装置
参考答案:B
句型转换。
1. I think I can carry that box. (改为否定句)
I_____ I _____ carry that box.
2. That's a large cabbage.(改为感叹句)
_____ cabbage that is!
3.That dog is so cute. (改为同义句)
That is______dog.
4. The farmer grew a lot of cabbages last year. (改为一般疑问句)
_____ the farmer_____ a lot of cabbages last year?
急性上呼吸道感染会并发或继发什么疾病,以下不正确的是()
A.急性鼻窦炎
B.中耳炎
C.肺结核
D.气管-支气管炎
E.心肌炎