水泥的初凝时间
参考答案:是指自水泥加水拌合算起到水泥浆开始失去可塑性的时间。
补全短文。
Come to Parkson store. Here is a supermarket. Have a l 1 ! All the fruit and vegetables are at a very
good p 2 ! Do you like oranges? They are ¥3 a kilo. Do you n 3 big and red strawberries at ¥5
a kilo? And tomatoes are just ¥2 a kilo. Oh, come on with me. Here is the s 4 center. Do you have a
football or a basketball? They are all only ¥ 50 each. And the sports shoes in all colours are ¥ 65 a pair!
It's so c 5 ! Do you believe it? Come on soon!
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我们需要对重大影响的采购品项制定采购目标,而对不太重要的品项,则设定通用采购目标就足够了。