轨道车起步时,发动机油门不宜(),以防车轮打滑。 ["A、太小","B、中速","C、太大","D、怠速"]
真核生物细胞DNA复制的特点() ["引物较长","冈崎片段较短","仅有一个复制起始点","在细胞周期的G1期最活跃"]
一般纵锯的料度为其锯条厚度的()倍;而横锯的料度为锯条厚度的()倍。 ["(1.2~1.5),(1~1.2)","(1~1.2),(0.6~1)","(0.6~1),(1~1.2)","(1~1.2),(1.2~1.5)"]
金鹰290-4型轨道车设计最高时速为()km/h. ["A、100","B、92","C、85","D、105"]
建筑施工中,拆除跨度较大的梁下支柱时,应先从()开始。 ["两端","跨中","梁1/3处","梁1/2处"]
简述我国环境规划的发展趋势。