单项选择题
对起动机应进行多种检查，技师A说一种是分别检查端子50和端子30的电压。技师B说一种是检查蓄电池端子的电压。谁说得对？ A、只有技师A说得对 B、只有技师B说得对 C、技师A和技师B说得都对 D、技师A和技师B说得都不对
单项选择题 “The purpose of the exchange program is to promote the understanding between the two countries.” The underlined part is the _________ of the sentence. A、object B、adverbial C、predicative D、subject
问答题 栅条式犁壁适用于耕[填空(1)] 。
单项选择题 A、正确 B、错误
