2 Should ensure that the cooling pond, cleaning, there must be no debris, dirt, every six months to carry out a sea of washing machines, water pipes, to remove scale, it would be specific about 25 kg of hydrochloric acid into the plastic bucket, then on the pump inlet and outlet pipe in plastic buckets together Add to the closure of machine power, a separate 15-minute run to open pumps, hydrochloric acid in the sea in circulation, remove furring.

3.2 應(yīng)確保冷卻水池內(nèi)清潔18岁以下禁止进入黄色网站，不得有雜物亚洲综合另类图片久久、污垢，每六個(gè)月要對(duì)機(jī)器水路進(jìn)行一次清洗欧美成在人现视频，除去水管內(nèi)水垢国产一线高清免费A片在线观看，具體做法是將25kg左右的鹽酸倒入塑料桶中，然后將水泵上的進(jìn)水管和出水管一并放入塑料桶中国产自偷自偷免费一区，關(guān)閉機(jī)器電源亚洲中文国内精品福，單獨(dú)開(kāi)啟水泵運(yùn)行15分鐘，使鹽酸在水路中循環(huán)流動(dòng)无码aiai，可以除去水垢在线观看黄色视频毛片。

He untied the bucket from the rope and tied the hook to the rope.

他解開(kāi)桶上面的繩子，把吊鉤系在繩子上女人丨8毛片一级毛片。

We let the bucket down by a rope.

我們用繩子把桶吊下去欧美一级做一级a做片性。

Eg:We let the bucket down by a rope.

我們用繩子把桶吊下去。

We let the bucket down by a rope.

我們用繩子把吊桶放下去大陆免费高清不卡黄色视频。

He untied the bucket from the rope and tied the hook to the rope.

他解開(kāi)了鉤著桶子的繩索成年美女黄网站18禁免费动态图。

He untied the bucket from the rope and tied the hook to the rope.

他從繩子上解下捅，把鉤子系到繩子上欧美日韩国产高清视频。

People standing in lines knock a wooden bucket hanged on a rope with a wooden stick.

孩子和大人排著隊(duì)依次用手中的木棒敲擊吊在繩索上的大木桶久久久久国产精品爆乳。

He ran home to get a hook. He untied the bucket from the rope and tied the hook to the rope.

他跑回家拿了一個(gè)鉤子，他從繩子上解下捅国产偷窥2020在线观看，把鉤子系到繩子上亚洲高偷拍一区二区三区。

We let the bucket down by a rope.

咱們用繩子把桶吊下去。