患儿,3岁,惊厥反复发作入院。为防止该患儿惊厥时外伤,而属于错误的处理方法是().
A. 将纱布放在患儿的手中
B. 移开床上一切硬物
C. 用约束带捆绑四肢
D. 床边设置防护栏
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乾隆的()(儿子)精于天文算法,所书八线法手卷,至为精密,著有《蕉桐幐稿》传世。
If the ordered spare parts have been modified by manufacturer, which of the following should be pay attention to?()
A. quality
B. reliability
C. price fluctuating
D. applicability
两对连锁基因间发生交换的孢母细胞的百分率,恰是交换配子(重组型配子)百分率的()