问题
单项选择题
加压的可燃物质泄漏时形成射流，如果在泄漏裂口处被点燃，则形成（）
A.喷射火
B.火球
C.突发火
D.池火
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
加压的可燃物质泄漏时形成射流，如果在泄漏裂口处被点燃，则形成（）
A.喷射火
B.火球
C.突发火
D.池火
参考答案：A
| 完形填空。 | |||
| A:Alice B-Mr. Smith A:Do you 1 black bags? B:Yes, I do. I have black bags, red bags 2 blue bags. Do you 3 these7 A:Yes, I do. How 4 _ they? B:They're thirty 5 . A: 6 you have pants? B: Yes, I do. These red pants 7 seven dollars. A:Are those pants 8 the table? How much are they? B:Seventeen dollars. And 9 _black pants are twelve dollars. A:I’ll take 10 red pants. | |||
| ( )1. A.have ( )2. A. or ( )3. A. likes ( )4. A. many are ( )5. A. dollar ( )6. A. Do ( )7. A.does ( )8. A. at ( )9. A. this ( )0. A. this | B. has B. but B. like B. many is B. dollars B. Does B. do B. of B. that B. these | C.are C. and C. sells C. much are C. dollar's C. Are C.is C, to C. those C. they | D. like D. no D. sell D. much is D. dollars D. Is D. are D. on D. they D. that |