工业建筑上采用的铸石制品是以天然岩石或工业废渣为原料，加入一定的附加剂等加工制成的，它的性能何者不正确？( )

Scientists listened to fish and found a volcano（火山）. It...

单项选择题Scientists listened to fish and found a volcano（火山）. It is eight thousand feet tall. But it is on the floor of the ocean off the northeast coast of New Zealand. There the water is nine thousand feet deep; it hides the volcano from view.
If it hadn’t been for the scientists, we still might not know of the volcano. These men were recording underwater noises. Most of these noises are made by fish. But the scientists heard a strange rumbling（隆隆声）. They felt that no fish could make this sound, so they pulled instruments through the water and found the volcano.
The volcano was not found sooner because ____.（　　）

节能设计中，当窗墙面积比超过规定的数值时，采取以下哪种方法，可以改善室内热环境？Ⅰ.采用高效能保温窗 Ⅱ...

单项选择题节能设计中，当窗墙面积比超过规定的数值时，采取以下哪种方法，可以改善室内热环境？Ⅰ.采用高效能保温窗 Ⅱ.增设夏季活动遮阳Ⅲ.减少外墙的传热系数 Ⅳ.改变窗玻璃的分格形式( )

Scientists listened to fish and found a volcano（火山）. It...

单项选择题Scientists listened to fish and found a volcano（火山）. It is eight thousand feet tall. But it is on the floor of the ocean off the northeast coast of New Zealand. There the water is nine thousand feet deep; it hides the volcano from view.
If it hadn’t been for the scientists, we still might not know of the volcano. These men were recording underwater noises. Most of these noises are made by fish. But the scientists heard a strange rumbling（隆隆声）. They felt that no fish could make this sound, so they pulled instruments through the water and found the volcano.
Scientists discovered the volcano ____.（　　）