If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in (). 正确。 错误。
用言是没有活用的自立词。 正确。 错误。
我国的地震活动主要集中分布在哪些地震带上? 正确。 错误。
Official proof of a Chinese vessel’s nationality is contained in the (). 正确。 错误。
If the engine does start on air, but combustion does not immediately begin, the cause may not be (). 正确。 错误。
形式体言又叫做形式名词。