- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
linux系統(tǒng)中，以下顯示結(jié)果不同的是（）。
A、echo The current working path is $PWD.
B、echo 'The current working path is $PWD.'
C、echo "The current working path is $PWD."
D、echo "The current working path is `pwd`."
