抓斗桥式起重机是通用桥式起重机中最基本的类型,其他各种类型的起重机都是在其基础上派生而来的
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1. The young man has been ____ his pension and savings account since he lost his job in January.
A. calling off
B. living off
C. pulling off
D. paying off
KFC _____ served only a few items but now offers more than 140. Yet the restaurants’ revenue fell by 11 percent in the first quarter of 2015.
A. frequently
B. similarly
C. initially
D. primarily
There is no doubt that the human is the most ______ intangible asset for any company in today’s dynamic and continuously changing business world.
A. valued
B. valuing
C. invaluable
D. valueless
Scientists believed that the bony fish like trout ______ themselves forward with the movement of their tails, while the fins on their tops and bottoms mainly work as stabilizers
A. compel
B. expel
C. repel
D. propel