may jam against the stops
will not automatically position the boat at the embarkation station
screw may come out of the sheath
will chafe against the falls and may cause their failure
第1题:
A. The packets have exceeded the time-to-live value.
B. There is a loop.
C. The asterisks indicate a response time out.
D. The asterisks indicate that the traceroute is completed.
第2题:
第3题:
We have many sports_______ (club).
第4题:
第5题:
第6题:
What is the purpose of the limit switch on gravity davits?
A.To cut off the power when the davits hit the track safety stops
B.To stop the davits from going too fast
C.To cut off the power when the davits are about 12 inches or more from the track safety stops
D.None of the above
第7题:
第8题:
A、have had worked
B、have been working
C、are working
D、work
第9题:
第10题: