题型:填空题 根据句意及首字母或汉语提示完成单词。1. Mary c______ her room every morning. 2. Jack, some one is w______ for you outside the door. 3. Do you have a c______? I want to take some photos. 4. The sun goes up in the east and goes down in the ______(西方).5. There are lots of ______(鸟) in the tree. 查看答案
题型:填空题 如图所示,将重为2N的木块放入烧杯中,静止时木块所受浮力的大小为__________N,浮力的方向__________.木块排开水的体积为__________m3;放入木块后,烧杯底部所受水的压强__________(变大/变小/不变).(g=10N/Kg) 查看答案