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名词解释题
病害循环(disease cycle)
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单选题The passage is primarily concerned with which of the following?A
Describing the life cycle of the Plasmodium protozoan as it relates to the disease malariaB
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单选题The size of the exhaust valve opening is ()A
most critical in a four-stroke cycle diesel engineB
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bearing pressure in a four-stroke/cycle acting single diesel engine is continually reversedB
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Some provision must be made in a two-stroke/cycle engine to keep the rings from binding in the portsC
No gap is required to exist between the ends of the ring when cold in a two-stroke/cycle engine, but a small gap is required in a four-stoke/cycle engineD
The gaps should be staggered on either side of a piston in a two-stroke/cycle engine, while staggering is not necessary in a four-stroke/cycle engine
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名词解释题遗传病(genetic disease,inherited disease,hereditary disease)
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