Tuesday, April 23, 2024
问题:花卉的茎插又分为:芽叶插、软材料扦插、半软材料扦插、()
Wednesday, April 24, 2024
Sunday, February 11, 2024
问题:属于长日照的花卉有:爪叶菊、紫罗兰、翠菊、金鱼草、()
Sunday, September 24, 2023
Saturday, May 4, 2024
Tuesday, April 23, 2024
Saturday, February 10, 2024
问题:基因工程的工具酶有:限制性核酸内切酶、DNA连接酶、DNA多聚酶、DNA末端转移酶、()
Tuesday, April 23, 2024
问题:常年为斑色叶:变叶木、撒金榕、撒金珊瑚、()、()、()
Saturday, February 10, 2024
问题:园林植物中属于阳性树种有:落叶松属、松属(华山松、红松除外)、水杉、桦木属、桉属、柳属、杨属、栎属、()、()、()
Tuesday, April 23, 2024
Friday, February 23, 2024
Saturday, April 27, 2024
问题:按树木的园林用途将园林树木分为:园景树、庭荫树、行道树、观花树、垂直绿化树、()
Monday, March 25, 2024
Sunday, September 24, 2023
Saturday, April 27, 2024
问题:评定优良种子的标准有:()、生活力强、发育充实、纯洁度高、无病虫害。
Wednesday, November 15, 2023
问题:按照经典遗传学对基因的概念,可以把()和突变单位统称为结构单位。这样基因即是一个结构单位,又是一个功能单位。
Sunday, February 11, 2024
Tuesday, April 23, 2024
Tuesday, January 23, 2024
Saturday, April 27, 2024