使用钢绳不得超负荷，捆绑重物牢靠，（）不偏位，起吊前，周围人员要躲开。
参考答案：重心
Is there about this T-shirt? [ ]
A. something special
B. anything special
C. special something
D. special anything
气象学上把怎样运动的空气叫做“风”？
