——Is there a No. 2 bus stop near here?——Yes, there is. __________ at the second crossing, and you will find it.
A:Turning left
B:Turn left
C:To turn left
D:Turns left
①求证:BE=CF.
②当α=120°,求∠FCB的度数.
③当四边形ACDE是菱形时,求BD的长.
0.10.2=0.3x
x=( )
“三氯生”是一种高效广谱抗菌剂,广泛用于牙膏、药皂、洗面奶、空气清新剂等。下面关于三氯生(C12H7Cl3O2)的说法中错误的是( )