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【单选题】
______________ expanded the money supply by breaking plastic chips in two and found pieces of tin foil and tried to make copies of metal coins.A.
Melati
B.
Chantek
C.
Towan
D.
Orky
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【简答题】什么是行车闭塞法?什么是基本闭塞法?什么是代用闭塞?
【单选题】The old man asked me ____
A.
where was the cinema
B.
where is the cinema
C.
where the cinema was
D.
where was the way to the cinem
【简答题】什么是行车闭塞法？行车闭塞法有几种？
【单选题】The old man asked me ________
A.
where was the cinema
B.
where is the cinema
C.
where the cinema was
D.
where was the way to the cinema
【单选题】The old man asked me___.
A.
where the cinema was
B.
where was the cinema
C.
where is the cinema
D.
where was the way to the cinema
【多选题】以下哪些项属于两台绞车对拉运输时要注意防止出现的不安全行为()
A.
绞车和绞车二次保护不可靠拉放车。
B.
两台绞车间信号不灵敏或不使用信号拉放车。
C.
件与车之间固定不牢拉放车
D.
矿车运行区间内有行人拉放车。
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