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【单选题】
当故障显示占用且确认该区段空闲时，列车在该信号机前停车后，司机应立即报告行调，由车站行车值班员在HMI上操作开放（）。A.
引导信号
B.
临时限速
C.
区故解
D.
站台跳停
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】A．Every 2 years. B．Whenever one dies or must resign. C．Every 6 years. D．Every 4 years like the president.
【单选题】The Olympic Games are held ______．
A.
every four years
B.
every fourth years
C.
every four year
D.
every four-years
【简答题】4 I really/extremely want to go
to Australia. ____
【单选题】关于酶的描述正确的是( )
A.
所有的酶都含有辅酶或辅基
B.
所有酶的本质都是蛋白质
C.
都能增大化学反应的平衡常数加速反应的进行
D.
都只能在体内起催化作用
E.
都具有立体异构专一性
【简答题】Droughts (干旱)are common in Kenya . Before ,they came every 10 years ,but now they seem to be hitting us more often and for a longer time . We gave the droughts names :“longoza”was the drought when man...
【单选题】-- ______ was Winter Olympics held? --Every four years.
A.
How soon
B.
How long
C.
How far
D.
How often
【单选题】______ on ten years of observation and study, the theory shows that every one dreams every night, whether they realized it or not.
A.
Basing
B.
Based
C.
Being based
D.
Having based
【单选题】How often does the APEC hold its meeting?
A.
Once a month.
B.
Once a year.
C.
Every 10 years.
D.
Every Sunday.
【单选题】How often are county council elections held?
A.
Every four years.
B.
Every two years.
C.
Twice a year.
D.
Four times a year.
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