Multiple-choice questions on solar energy [Daily Question 090226]
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1. The lead leaching amount from the materials in contact with water in solar collectors when immersed in water shall not exceed ( ). A: 1μg/L B: 5mg/L C: 5μg/m3 D: 5mg/m3 2. The average heat loss factor of domestic solar water heating systems shall be less than or equal to ( ). A10W/m3 B15W/K C10W/(m3·K) D15W/(m3·K)
1. The lead leaching amount from the materials in contact with water in solar collectors when immersed in water shall not exceed (D). A: 1μg/L B: 5mg/L C: 5μg/m3 D: 5mg/m3 2. The average heat loss factor of domestic solar hot water systems shall be less than or equal to (D). A10W/m3 B15W/K C10W/(m3·K) D15W/(m3·K)
1. The lead leaching amount from the materials in contact with water in solar collectors when immersed in water shall not exceed (D). 2. The average heat loss coefficient of domestic solar hot water systems shall be less than or equal to (D)
1、D； (According to the Environmental Protection Industry Standard of the People’s Republic of China HJ/T 362-2007) 2, D
Choose D for both questions. These types of questions are not good; there’s nothing really to discuss about them
1. The lead leaching amount from the materials in contact with water in solar collectors when immersed in water shall not exceed (d). A: 1μg/L B: 5mg/L C: 5μg/m3 D: 5mg/m3 = 5μg/L. 2. The average heat loss factor of domestic solar water heating systems shall be less than or equal to (d). A10W/m3 B15W/K C10W/(m3·K) D15W/(m3·K)
1. The lead leaching amount from the materials in contact with water in solar collectors when immersed in water shall not exceed (D). 2. The average heat loss coefficient of domestic solar water heating systems shall be less than or equal to (D).
1D 2D We use a solar water heater at home; it’s really convenient, but it freezes over in winter.
1. The lead leaching amount from the materials in contact with water in solar collectors when immersed in water shall not exceed (D). 2. The average heat loss coefficient of domestic solar water heating systems shall be less than or equal to (D).
Today’s questions are quite simple: lol 1. The lead leaching rate from the materials in contact with water in solar collectors when immersed in water must not exceed (d). A: 1μg/L B: 5mg/L C: 5μg/m3 D: 5mg/m3 2. The average heat loss factor of domestic solar water heating systems must be less than or equal to (d). A10W/m3 B15W/K C10W/(m3·K) D15W/(m3·K)
I choose: 1, D； 2、D