A _______ line is a track used exclusively for a high-speed train. A: train B: track C: welded D: dedicated

A phrase relating to more than a specified amount is ______. A: in excess of B: maximum C: ate D: welded

a long section of track without joints A: dedicated line B: curve radius C: continuous welded rail

The high-speed train runs exclusively on a(n) _____________. A: dedicated line B: existing line C: special track D: continuous welded rail

If no gaskets are used in the piping joints of a Freon system, the joints must be（） A: finished joints B: welded joints C: ground joints D: soldered joint

The less expensive option of constructing special tracks for high-speed train is utilizing __________ . A: dedicated lines B: existing lines C: specail lines D: continuous welded rails

Overaging might be caused when () A: being aged at high temperature B: being aged for longer time C: being reserved in liquid hydrogen D: being welded

One of the 3 elements of high-speed train is ______ A: speed up to 199km/h B: need for a smaller curve radius C: track made with continuous welded rail D: speed up to 500km/h

Which of the following is not an element of high-speed rail? A: The need for a wider curve radius. B: Speed up to 199 km/h. C: Tracks made with continuous welded rails. D: The use of dedicated lines.

Which of the following is NOT an element of high-speed rail? A: Speeds up to 199 km/h. B: The need for a wider curve radius. C: Tracks made with continuous welded rails. D: The use of dedicated lines or upgraded existing lines.