Daily Security Management Question (12.26)
Thread Content
1. Solid particles with a normal size of 500μm or finer, which can remain suspended in air or settle due to their own weight, can burn or smolder in air, and can form an explosive mixture with air under atmospheric pressure and normal temperature conditions – this refers to ( ). A. Flammable dust B. Flammable particles C. Flammable gases D. Flammable fibers 2. Large passenger amusement facilities with a design wind speed of 2 m/s or more, or those operating at a height of more than 2 m above the ground, should fall under the safety supervision of the quality and technical supervision authorities. A. Average operating angular velocity B. Average operating linear velocity C. Minimum operating linear velocity D. Maximum operating linear velocity. Reference: 1.A 2.D
1. Solid particles with a normal size of 500μm or finer, which can remain suspended in air or settle due to their own weight, can burn or smolder in air, and can form an explosive mixture with air under atmospheric pressure and normal temperature conditions – this refers to (A). A. Flammable dust B. Flammable particles C. Flammable gases D. Flammable fibers 2. Large passenger amusement facilities with a design wind speed of (D) greater than or equal to 2 m/s, or those operating at a height of more than 2 m above the ground, should fall under the safety supervision of the quality and technical supervision authorities. A. Average operating angular velocity B. Average operating linear velocity C. Minimum operating linear velocity D. Maximum operating linear velocity