【单选题】【消耗次数：1】
下列植物需要和真菌共生才能完成生长发育的是（ ）。
①
天南星
②
重楼
③
玉竹
④
天麻
参考答案：
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相关题目
【单选题】
生长发育评价中最重要和最常用的形态指标是（ ）。
①
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②
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③
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④
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【单选题】
以下哪种情况与生长发育规律不符()
①
生长发育是连续的过程
②
各系统器官发育不平衡
③
生长发育遵循从上到下从近到远由粗到细由简单到复杂的规律
④
神经系统发育先慢后快
⑤
生长发育有个体差异
随机题目
【单选题】
锚杆支护中“三径”关系是否合理匹配，直接影响了锚固效果及锚杆支护的安全可靠性和经济合理性。“三径”是指：
①
锚杆杆体直径、锚杆螺帽直径和托盘直径
②
锚杆杆体直径、锚梁直径和锚孔直径
③
锚杆中部杆体直径、锚杆螺帽直径和锚杆尾部直径
④
锚杆杆体直径、锚孔直径和树脂药卷直径
【单选题】
硅酸盐水泥熟料掺入适量活性材料，不仅能提高水泥产量、降低水泥成本，而且可以改善水泥的某些性能，调节水泥的强度等级。下面属于活性材料的是：
①
石英砂
②
粘土
③
石灰石
④
粉煤灰