（）an order for one thousand tons or mo

1、To have an interview for a job，one sho

To have an interview for a job，one should________．Awear expensive clothesBbe clean and tidyCbe polite and gentlemanly(or gentlewomanly)Dbe both B and C

2、One end of a cylinder for a medium or

One end of a cylinder for a medium or high-speed diesel engine is sealed by the piston and rings, the other end is sealed by the （）AcrankcaseBcylinder headCvalve coverDengine frame

3、In order to pay out or slack a mooring

In order to pay out or slack a mooring line which is under strain，you should（）.Asluice the lineBsurge the lineCstopper the lineDslip the line

4、For one or two types of engine,the pis

For one or two types of engine,the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through （）.Athe cylinder coverBthe bottom of bed-plateCthe sumpDthe crankcase door

5、（）an order for 100 pieces or more，we a

（）an order for 100 pieces or more，we allow a special discount of 5% for payment by L/C.AAtBInCOnDFrom

6、Silk（）by Chinese for thousands of year

Silk（）by Chinese for thousands of years now.Ahas usedBhas been usedCwas usedDis used