Convection spreads a fire by（）. ["heated gases flowing through ventilation syetem","the transfer of heat across an unobstructed space","burning liquids flowing into another space","transmitting the heat of a fire through the ships metal"]
10个月的男婴，不能独坐，尚不能认识亲人与陌生人，平时少哭，少动，经常便秘，进食少，查体：表情呆板，前囟未闭，头大，劲短，眼距宽，眼睑浮肿，舌大常伸出口外，头发稀少，心率86次每分，心音低钝，腹部膨隆，腹胀明显。该患儿最可能的诊断是什么？应进行何项检查以明确诊断？
角度交会法，若示误三角形符合限差要求则取三角形的（）作为待定点的最终位置。 ["外心","内心","垂心","重心"]
Danage to ship’s fittings caused by stevedor’s negligence often happens. Therefore, the stevedores（）the cost of the damage repaired afterwards. ["should hold responsible for","should be hold responsible for","should be free of","should be brarable of"]
角度交会法测设平面点，需用的仪器是（）。 ["水准仪","钢尺","经纬仪","测距仪"]
实施绿色营销的步骤有哪些？
