The crankcase cover should never be allowed to open for investigation when ()
From this amount you need to()something to cover utility bills.
In charter-party,the acts of()cover the taking of the goods by violence from outside the ship.
The crankcase cover should never be allowed to open for investigation when ()
Please pass me the dictionary ______ cover is blue.
You should release the ()(重型螺栓)on top of the cover.
On the top of the cylinder is mounted the cylinder cover which is pressed onto () of the cylinder liner by means of nuts and studs.
In each cylinder cover there are two or three holes for ()
It’s hard to get data on cloud cover because______.
_____