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4、现行规程规定，采用维 仪测定水泥标准稠度用水量，以试杆距底板的距离为（）作为水泥净浆达到标准稠度的判定标准。
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5、初凝时间的测定，当试件沉至距离地板___时，为水泥的初凝状态。
Shanghai, with a history dating back to the third century BC, is one of the four ________ directly under the Central Government of China.
The buildings in The Bund are harmonious in colour and style, thus gaining the name of "_______".
Nanjing Rd., famed as "________", is an epitome of Shanghai's history and culture.
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