【Daily Question】 December 30th: Which is better, a long-tube respirator or a gas-filtering mask? ? ? ?
Thread Content
This post was last edited by Cuaili Yisu on 2016-1-4 at 15:25. Daily Question Activity Question (single-choice): Comparing long-tube respirators and gas-filtering masks, the two ( ). A. They have the same scope of application. B. They consist of the same components. C. They all belong to filter-type gas masks. D. All of their components include a mask. Hidden content in this post: D. All of their components include a mask. Please participate actively to win prizes. +10 points for correct answers, +5 points for participation. One time per person only. Close this topic after seven days.
Comparing long-tube respirators and canister masks, the two are (C). A. The scope of application is the same. B. The constituent components are the same. C. They all belong to filter-type gas masks. D. The mask is included among their constituent components
D. All the constituent components include masks
D. All the constituent components include masks
D. All the constituent components include masks
D. All the constituent components include masks
Comparing long-tube respirators and canister masks, the two are (D). A. The scope of application is the same. B. The constituent components are the same. C. They all belong to filter-type gas masks. D. The mask is included among their constituent components
Comparing long-tube respirators and canister masks, the two are (D).
D. All the constituent components include masks