It's more difficult to pay attention to the speaker than to under stand message of a speech.
A.
Y
B.
N
C.
NG
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举一反三
【简答题】The cylinder block is the largest part of the engine. It has cylinder in which the pistons operate and bearings which carry the crankshaft. In some engines, the cylinder block also carries the camsha...
【简答题】The cylinder block is the largest part of the engine. It has cylinder in which the pistons operate and bearings which carry the crankshaft. In some engines, the cylinder block also carries the camsha...