遥感的特点是( )。 ①探测范围大;②获取资料快;③不受地面条件限制;④获取信息量大
A.①②
B.③④
C.①②④
D.①②③④
参考答案:C
. — Thank you for picking me up in this remote area!
— _____. I’m just going in the same direction.
A.With pleasure
B.None of you business
C.Think nothing of it
D.There’s nothing in it
完好标准规定,允许最大闸瓦间隙:平移式制动闸为()。
A.1.5mm;
B.2mm;
C.2.5mm;
D.3mm。