结果1 题目 7Plastic(塑料的) bags are not expensive. They are also Sand easy to carry. This is why they are a2.P tool for people all over the world. But they can be big pollution to the Earth. It can take 3. h of years for plastic bags to break down(分解). Small pieces of ...
If you were hopping from city to city on land (be it on a bus tour or by train or car), you’d be constantly packing and unpacking, lugging bags around and dealing with the hassle of hotel check-ins and check-outs at each new destination....
To negotiate an unbanked curve at a faster speed,a driver puts a couple of sand bags in his van aiming to increase the force of friction between the tires and the road.Will the sang bags help?Why? 扫码下载作业帮搜索答疑一搜即得
Step 6:Cut eight, 6-inch lengths of your 1-inch PVC pipe. Sand down the ends of these 6-inch pieces so our 1-inch elbows will connect to them. Step 7:Slide one of these pieces into each hole in your bucket. Now, attach a 1-inch PVC elbow to each side of each pipe, elbows p...