柴油机与汽油机在可燃混合气形成方式和点火方式上有何不同？
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Emotional stress can ____blood pressure.
If you hesitate too long, doubts will ____and turn into fears.
Exposure to too much noise may ____some individuals to headache.
Levi, who was an ____businessman, saw the potential for this new product and agreed to Jacob's proposal.
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