常用的距离测量方法有（）、（）和（）
You are unable to connect your computer to a wireless network projector. The wireless network projector does not appear in the list of available network projectors provided by the Connect to a Network Projector wizard. You need to connect to the network projector. What are two possible ways to achieve this goal?（） ["A","B","C","D"]
田间持水量
钻机移动时，不当的操作是（）。 ["在10°的坡道上运行","90°急转弯","机下有人指挥"]
门塔机是一种（）。 ["起重设备","牵引设备","吊装设备","运移设备"]
单循环
