Questions from Issue 20151019
Thread Content
Participation reward: 2 Wealth. Reward for the correct answer: 9 Wealth. For a ventilation and air conditioning system in a single-story exhibition hall with a height of 25m, the air ducts are arranged according to fire compartments, and smoke exhaust fire valves are installed. Which of the following measures are correct? (A) Ductwork should be made of non-combustible materials. (B) When it is truly difficult to do so, sound-absorbing materials that are non-combustible and have low toxicity from their combustion products can be used. (C) Ductwork may be constructed from non-combustible materials that have low toxicity from their combustion products and a smoke density level of 25 or less. (D) The insulation material for ductwork within 2.0 meters on either side of electric heaters should be non-combustible. The correct answers are AC
For the ventilation and air conditioning system of a 25-m-high exhibition hall (single-story), the air ducts are arranged according to fire compartments, and smoke exhaust fire dampers are installed. Which of the following measures are correct? For AC (A) air ducts, non-combustible materials should be used. (B) When this is truly difficult, sound-absorbing materials that are flame-retardant and have low toxicity from their combustion products may be used. (C) Air ducts may be constructed from flame-retardant materials that have low toxicity from their combustion products and a smoke density level of 25 or less. (D) The insulation material for air ducts within 2.0 meters on either side of electric heaters must be non-combustible
For the ventilation and air conditioning system of a 25-m-high exhibition hall (single-story), the air ducts are arranged according to fire compartments, and smoke exhaust fire dampers are installed. Which of the following measures are correct? For AC (A) air ducts, non-combustible materials should be used. (B) When this is truly difficult, sound-absorbing materials that are flame-retardant and have low toxicity from their combustion products may be used. (C) Air ducts may be constructed from flame-retardant materials that have low toxicity from their combustion products and a smoke density level of 25 or less. (D) The insulation material for air ducts within 2.0 meters on either side of electric heaters must be non-combustible
For the ventilation and air conditioning system of a 25-m-high exhibition hall (single-story), the air ducts are arranged according to fire compartments, and smoke exhaust fire dampers are installed. Which of the following measures are correct? (A C) (A) Ductwork should be made of non-combustible materials. (B) When this is not feasible, sound-absorbing materials that are non-combustible and have low toxicity from their combustion products may be used. (C) Ductwork can be constructed from non-combustible materials that have low toxicity from their combustion products and a smoke density level of 25 or less. (D) The insulation material for ductwork within 2.0 meters around electric heaters should be non-combustible
For the ventilation and air conditioning system of a 25-m-high exhibition hall (single-story), the air ducts are arranged according to fire compartments, and smoke exhaust fire dampers are installed. Which of the following measures are correct? For AC (A) air ducts, non-combustible materials should be used. (B) When this is truly difficult, sound-absorbing materials that are flame-retardant and have low toxicity from their combustion products may be used. (C) Air ducts may be constructed from flame-retardant materials that have low toxicity from their combustion products and a smoke density level of 25 or less. (D) The insulation material for air ducts within 2.0 meters on either side of electric heaters must be non-combustible
AC~~~~~~~~~~~~~~~~~~~~~~
For the ventilation and air conditioning system of a 25-m-high exhibition hall (single-story), the air ducts are arranged according to fire compartments, and smoke exhaust fire dampers are installed. Which of the following measures are correct? For AC (A) air ducts, non-combustible materials should be used. (B) When this is truly difficult, sound-absorbing materials that are flame-retardant and have low toxicity from their combustion products may be used. (C) Air ducts may be constructed from flame-retardant materials that have low toxicity from their combustion products and a smoke density level of 25 or less. (D) The insulation material for air ducts within 2.0 meters on either side of electric heaters must be non-combustible
For the ventilation and air conditioning system of a 25-m-high exhibition hall (single-story), the air ducts are arranged according to fire compartments, and smoke exhaust fire dampers are installed. Which of the following measures are correct? A C
For the ventilation and air conditioning system of a 25-m-high exhibition hall (single-story), the air ducts are arranged according to fire compartments, and smoke exhaust fire dampers are installed. Which of the following measures are correct? For US (A) air ducts, non-combustible materials should be used. (B) When this is indeed difficult, sound-dampening materials that are combustible but have low toxicity from their combustion products may be used. (C) Air ducts may use combustible materials with low toxicity from combustion products and a smoke density level of 25 or less. (D) The insulation material for air ducts within 2.0 meters before and after electric heaters must be non-combustible
For the ventilation and air conditioning system of a 25-m-high exhibition hall (single-story), the air ducts are arranged according to fire compartments, and smoke exhaust fire dampers are installed. Which of the following measures are correct? For air ducts of type A C, non-combustible materials should be used. (B) When this is truly difficult, sound-absorbing materials that are flame-retardant and have low toxicity from their combustion products may be used. (C) Air ducts can be constructed using flame-retardant materials with low toxicity from combustion products and a smoke density level of 25 or less. (D) The insulation material for air ducts within 2.0 meters before and after electric heaters must be non-combustible
A, B, C, D, ———————– ———————– ———————–