选择题：幼儿园的楼梯、窗户都应设护栏,且高度不应低于A、0.5米

The new appointment of our president _________ from the very beginning of next s

__________ the earth to be flat, many feared that Columbus would fall off the ed

The manager spoke highly of such _______ as loyalty, courage and truthfulness sh

I couldn.t find _____, and so I took this one.A.a large enough coatB.a large coa

瓦斯压力P ≥（） MPa时，即可判定为瓦斯突出工区。A、 0.73B、 0.74C、 0.75D、 0.76