In a diesel engine, the time taken to heat the fuel particles, turn them into vapor, and bring about combustion is called ()
A. injection lag
B. ignition delay
C. compression
D. turbulence lag
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省、自治区、直辖市党委巡视组只负责对市、县党委和同级政府党组领导班子及其成员巡视。()
A. 正确
B. 错误
撤柱后不能自行冒落的顶板,应在密集支柱外0.5m处,向放顶区重新凿岩爆破,强制崩落。
A. 正确
B. 错误