问题
多项选择题
在采取不均匀的试样时,下述有关决定采样数量的因素中()是不对的。
A.物料粒度
B.粉碎试样的难度
C.粉碎试样中存在的杂质
D.物料的不均匀性
E.试样中组分含量与整批物料中组分平均含量间所允许的误差
F.物料的相对密度
(G)物料中的相对溶解度
答案
参考答案:F, G
在采取不均匀的试样时,下述有关决定采样数量的因素中()是不对的。
A.物料粒度
B.粉碎试样的难度
C.粉碎试样中存在的杂质
D.物料的不均匀性
E.试样中组分含量与整批物料中组分平均含量间所允许的误差
F.物料的相对密度
(G)物料中的相对溶解度
参考答案:F, G
完形填空。 | ||||
Jimmy is a black and white dog. We all like 1 very much. He is a member of our 2 . Jimmy is one and a half years old. He usually 3 at about 7: 00 a.m. And at 7: 30 he eats his 4 . He usually has bones (骨头). Sometimes he has 5 . After that he goes out and brings 6 for us to drink. At about 9: 00 he goes out to meet 7 , a brown dog next door. He comes back at about 11: 30 a.m. for his lunch and sleeps three hours. At about 3: 30 p.m. he 8 and brings us the evening newspaper. Then I walk him in the park. We often play Frisbee (飞碟) together there. At about 6: 00 p.m, he 9 his meal. Every day at 7: 00 in the 10 he and I sit together on the sofa to watch TV. Then he sleeps. | ||||
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