A.Were there loss of energy by friction
B.Since there be loss of energy by friction
C.Were there no loss of energy by friction
D.Should be no loss of energy by friction
您可能感興趣的試卷
你可能感興趣的試題
A.The smoother；the greater
B.Smoother；less
C.The rougher；the greater
D.rougher；greater
A.in which
B.on which
C.by which
D.from which
A.examined；are not having
B.had examined；would not have
C.had examined；would not have had
D.should examine；would not have
A.can we solve
B.we can solve
C.we will solve
D.can we solved
A.represent
B.represents
C.representing
D.being represented
最新試題
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
If separating effect is not good, which measure should be taken （）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
The ISPS Code consists of a mandatory section-Part A, which shows（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
To proceed to the assistance of a ship in distress is（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）