嫩枝和叶片的插穗选择枝叶健壮、发育正常的材料随剪随插。
QC小组活动取得的成果类型，主要可分为（）和“无形成果”。 ["“有形成果”","“实际成果”","“真实成果”","“经济效益&rdquo"]
感染伤口手术后的物品用（）的消毒方法。 ["先消毒","再清冼","再消毒","以上均应做好"]
风险溢价是哪两个数值之差（）。 ["金融资产未来现金流的期望值","确定性等值","金融资产未来现金流折现值","不确定等值"]
On his first sea（）he was still quite young but showed great courage to face the storm. ["trip","voyage","tour"]
郭啸天是被（）杀死的。
