单项选择题
A.can we solve B.we can solve C.we will solve D.can we solved
Let H （） the quantity of heat which has been converted ...
单项选择题Let H （） the quantity of heat which has been converted into mechanical work.
A.represent B.represents C.representing D.being represented
The chief engineer suggests that the second engineer （）...
单项选择题The chief engineer suggests that the second engineer （） a dead line for handing in the work plan.
A.will set B.shall set C.set D.sets
After he （） the test, the engineer put down the results...
单项选择题After he （） the test, the engineer put down the results.
A.has finished B.finishes C.had finished D.would finish
