Residents of three villages with three different types of water supply were asked to participate in a survey to identify cholera carriers. Because several cholera deaths had occurred recently, virtually everyone present at the time underwent examination. The proportion of residents in each village who...
The most difficult situation can be found in 30% of the villages lying in the watershed zone. These villages were built near springs which have been used for ages and are still the main source of water supply - often the only one. In these villages the only reasonable solution to this ...
The chart shows the proportion of renewable energy in total energy supply in 4 countries from 1997 to 2010. Summarize the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words. Task 1 柱状图 - - 范文 答题 Some people argue th...
and it has two separate and independent supply mouths (23, 24) which extend from said body, a first mouth (23) for supplying the hot/cold water arriving from the outflow of the mixer valve, and a second mouth (24) for the supply of purified water arriving from the outflow of the bo...
Phytoplankton population patterns in marine shrimp culture ponds with different sources of water supply Six shrimp culture ponds of 1 ha each, located between 101° 22 E 2° 49N 101° 22 E 3° 17N, were used to elucidate the effects of using eutrophic waters ... FM Yusoff,H Matias-Pera...
all the varieties are sensitive to soil water supply capacity most from jointing stage to tasseling stage and this phase is the main period for water consumption differences between varieties; water use efficiency of different varieties has better consistency with yield; Dafeng30,Fuyou968 and Xianyu...
Different types of drip tapes were employed to supply varying water quantities. A 10 cm emitter spacing tape delivering 10.6 L per hour per meter was used for the I100 treatment, whereas a 15 cm emitter spacing tape providing 5.3 L per hour per meter was used for the I50 treatment (Irritec...
As an important way to restore the urban water ecological environment, they can not only solve the problems of urban drought and serious shortage of water resources supply but also use the LID system to absorb, store and purify rainwater and adjust the balance of the urban water ecological ...
1 year 应用 家庭住宅 压力 低压 电压 220V/50Hz 其他属性 支持定做 OEM, ODM, OBM 原产地 China 电源 Electric 结构方式 单级泵 品牌 Stream 型号 SQB&SDB 马力 0.5HP-1HP 出水口尺寸 1" 电源功率 370W-750W Standard or Nonstandard Standard
Supply Ability Supply Ability 60000 Carton/Cartons per Month for water pump 380v Show more Lead time Samples Maximum order quantity: 1 carton Sample price: $95.00/carton Customization Certifications CCC CE Ratings & Reviews Product reviews