(1)     富含的營養(yǎng)素是     ;(2)                 其主要目的是    

                                                  

      牛奶、雞蛋                                食品包裝時充氮                                         

                                                                                          

(3) 缺少         肥(填化肥種類),該類化肥可增強(qiáng)作物           能力                                                                                                                                     

                                                                                                                                                                  

                                                                                                                      大豆葉邊緣發(fā)黃                                                                               

                                                                                        

(4)洗滌劑的作用是                                  。                                                                                        

用洗滌劑洗碗

(1)蛋白質(zhì)(2)防止食品腐敗(3)鉀(或K)抗病蟲害和抗倒伏(4)乳化作用

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科目:初中化學(xué) 來源: 題型:

17、根據(jù)下列圖片信息回答問題:

(1)富含的營養(yǎng)素是
蛋白質(zhì)


(2)其主要目的是
延長食品保質(zhì)期(合理均可)
;

(3)洗滌劑起
乳化
作用;

(4)不屬于消防安全標(biāo)志的是
B
;(填序號)

(5)制作透明板的材料是
C
(填序號).

A.金屬材料      B.天然纖維     C.合成材料      D.天然橡膠.

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科目:初中化學(xué) 來源: 題型:

16、(1)富含的營養(yǎng)素是
蛋白質(zhì)

(2)其主要目的是
節(jié)約金屬資源

(3)缺少
肥(填化肥種類),該類化肥可增強(qiáng)作物
抗寒抗旱
能力
(4)熟石灰的作用是
改良酸性土壤

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科目:初中化學(xué) 來源: 題型:解答題

(1)富含的營養(yǎng)素是________
(2)其主要目的是________
(3)缺少________肥(填化肥種類),該類化肥可增強(qiáng)作物________能力
(4)熟石灰的作用是________.

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科目:初中化學(xué) 來源: 題型:解答題

根據(jù)下列圖片信息回答問題:

(1)富含的營養(yǎng)素是______;
牛奶、雞
(2)其主要目的是______;
食品包裝時充氮氣
(3)洗滌劑起______作用;
用洗滌劑洗碗
(4)不屬于消防安全標(biāo)志的是______;(填序號)

(5)制作透明板的材料是______(填序號).

A.金屬材料   B.天然纖維   C.合成材料   D.天然橡膠.

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科目:初中化學(xué) 來源: 題型:

                                                                                

(1)     富含的營養(yǎng)素是     ;(2)                 其主要目的是    

                                                  

      牛奶、雞蛋                        食品包裝時充氮                                          

                                                                                          

(3) 缺少         肥(填化肥種類),該類化肥可增強(qiáng)作物           能力                                                                                                                                     

                                                                                                                                                                  

                                                                                                                            大豆葉邊緣發(fā)黃                                                                               

                                                                                       

(4)洗滌劑的作用是                                  。                                                                                        

用洗滌劑洗碗

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