【单选题】列车运行图按区间正线数目不同分为3类,以下哪个不属于
【判断题】常对漆面上蜡抛光,有助于防止蚀痕的出现。 ( )
【判断题】机房电源设备供给程控交换机的电压标称值为-48 V,允许变动范围为-57 V ~ -40 V。( )
【单选题】如按列车运行图格式分类,下图属于()运行图
【单选题】下列列车运行图的分类方式属于按运行速度分类的是:
【单选题】听力原文:M: The doctor told me to quit drinking coffee. W: Shouldn't you quit drinking tea, too? Q: What does the woman suggest? (16)
A.
Tea is hatter than coffee.
B.
The man should switch to tea.
C.
There are two reasons for not drinking coffee.
D.
The man shouldn't drink tea either.