Michael’s vacuum cleaner squealed loudly, shook violently, and _____. A: filled the air with dust B: dust filled the air C: dust was filled in the air D: dust was filled with the air
Michael’s vacuum cleaner squealed loudly, shook violently, and _____. A: filled the air with dust B: dust filled the air C: dust was filled in the air D: dust was filled with the air
She is ______ the dressing table. A: dusted B: dust C: dusting D: to dust
She is ______ the dressing table. A: dusted B: dust C: dusting D: to dust
To effectively control the respirable coal and silica dust exposure of mine workers, it is not necessary to identify the sources of dust generation and quantify the amount of dust liberated by these sources.
To effectively control the respirable coal and silica dust exposure of mine workers, it is not necessary to identify the sources of dust generation and quantify the amount of dust liberated by these sources.
The ________faces were a sight, covered with dust.(boy)
The ________faces were a sight, covered with dust.(boy)
dust [dʌst]
dust [dʌst]
Dust bowl means______.
Dust bowl means______.
remove the dust from
remove the dust from
Continuous Miner dust control Methods include: dilute, suppress, redirect, or capture dust A: 正确 B: 错误
Continuous Miner dust control Methods include: dilute, suppress, redirect, or capture dust A: 正确 B: 错误
Dust consists of particles in the atmosphere that come from various sources such as . A: soil B: dust lifted by weather C: volcanic eruptions D: pollution
Dust consists of particles in the atmosphere that come from various sources such as . A: soil B: dust lifted by weather C: volcanic eruptions D: pollution
An enormous amount of dust in the atmosphere could lead to ______.
An enormous amount of dust in the atmosphere could lead to ______.