植物细胞的结构，由外向里依次是
①细胞膜②细胞壁③细胞质④细胞核[ ]
A．①②③④
B．②①③④
C．③①②④
D．④③①②
B
简述相邻关系与地役权的区别。
A client is admitted with a suspected diagnosis of an acute myocardial infarction. When providing care for the client, the nurse should avoid which route when taking a temperature（）
A. Oral.
B. Rectal.
C. Axillary.
D. Tympanic.
