某公路路堤填料为黄土，最优含水率为18%，黄土天然含水量为12%，天然重度为16kN/m3，该黄土填筑时每立方米天然土料中宜加水（）。
A.0.05t
B.0.07t
C.0.09t
D.0.11t
参考答案：C
解析：
根据物理性质指标间关系进行计算；
设1m3中土粒重为Gs，水重为Gw
G'w=0.18Gs-Gw=0.18×1.429-0.171=0.086(t)
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cheaper in early summer. It is also cheaper to go there by plane than to go there by train, and it's easier to get a ticket in May than June, July and August. Most people think that Greece is prettier. Others say Spain is hotter and more expensive. Certainly hotels in Spain are more expensive than hotels in Greece, but also they are more comfortable (舒适的). Greece is much more interesting and it is far quieter than Spain. Spain is nearer and one can get there more quickly. But Spain can be very crowded. Some people feel that Greece is more beautiful, the air is cleaner and the sea is bluer. Also the food is simpler in Greece. People prefer (更喜欢，宁愿) Greece this summer. Greece is the better choice (选择). 根据短文内容，回答下列问题。 1. Which countries are more popular than France and Italy? ___________________________________________________________ 2. Which is the cheaper way to travel to Spain or Greece? ___________________________________________________________ 3. Which country is prettier? ___________________________________________________________ 4. Which country is more interesting? ___________________________________________________________ 5. Which country is more crowded? ___________________________________________________________ 6. Which country is the better choice for people in this summer? ___________________________________________________________ |