一般计算机声卡的Line Out接口通过音频线来连接音箱的（ ）接口。

A:Line in B:Mic C:Line out D:Line

一般计算机声卡的（ ）通过音频线来连接音箱的Line接口。

A:Line Out接口 B:Line in接口 C:Mic接口 D:USB接口

An assembly line is ______.

A:a production line where each worker does only a small part of work to complete a product B:a house where many cars could be built in a single day C:a place where Henry could limit himself to the few tools for the task D:a workshop where the Model T was first produced in 1913

The CMR convention is the convention on contract for international carriage of goods by( ).

A:rail B:sea C:air D:road

In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the _____.

A:lube oil pump suction line B:lube oil pump discharge line C:bottom of the lube oil sump D:outlet from the lube oil header

Air line lubricators are used in compressed air systems to lubricate _____.

A:the suction and discharge valves B:tools and equipment served by compressed air C:air line reducing valves D:all of the above

A pressure drop in the liquid line of a refrigeration system may cause________.

A:the solenoid valve to seize B:the compressor to hunt C:flash gas to form in the liquid line D:the expansion valve to freeze open

If a vessel under tow starts jumping on its tow line ， the most appropriate action to alleviate the condition is to ______．

A:change course B:slow down C:heave to D:adjust tow line length"