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【单选题】
Checks must be made that cylinder starting air valves do not leak . These can be carried out while the engine is running_____adjacent to the valve.A.
by applying soap solution on the air pipe
B.
by watching if there is bubble on the air pipe
C.
by feeling the temperature of the air pipe
D.
by listening to the leaking sound emitting from the air pipe
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【简答题】Using the Right World Fill in
the blanks with the words given below, changing the form if necessary. Fill in each blank
with one word only. 1. Bees communicate by dancing: For example, they do a ki...
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