电梯的升降是平移.______.
电梯的升降是上下位置的平行移动,所以电梯的升降是平移的说法是正确的;
故答案为:正确.
---I have finished my homework ,let’s watch the program I AM A SINGER on Hunan TV.
---_________.
A.That’s right
B.Thank you
C.That sounds interesting
D.Not at all
股票是一种有价证券,其基本特征是()。 ①权利性和责任性②可返还性③收益性和风险性④流通性
A.①②③
B.②③④
C. ①③④
D.①②③④