单项选择题

The （） of the semi-built method of the construction crankshaft is that by making the two webs and crankpin from a single forging the grain flow in the steel follows the web round into the crankpin and back down the other web.

A.advantages
B.disadvantages
C.power advantages
D.power disadvantages

相关考题

Today, crankshafts for large 2-stroke crosshead engines...

单项选择题Today, crankshafts for large 2-stroke crosshead engines are of the （）type.

A.semi-built
B.built-up
C.solid forged
D.individual forged

The crankpins and journals were machined and matching h...

单项选择题The crankpins and journals were machined and matching holes bored in the webs, which were slightly （） in diameter.

A.smaller
B.larger
C.higher
D.lower

The crankshafts on the large modern 2-stroke crosshead ...

单项选择题The crankshafts on the large modern 2-stroke crosshead engines are （）big （）makes as a single unit and so are constructed by joining together individual forgings.

A.enough；to
B.too；to
C.such；so
D.so；that

船舶电气与船舶安全

The （） of the semi-built method of the construction crankshaft is that by making the two webs and crankpin from a single forging the grain flow in the steel follows the web round into the crankpin and back down the other web.