单项选择题

锁骨中线为沿着乳头向下画出的垂直线。（）

A．对
B．错

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多项选择题

上消化道大出血者应用冰盐水洗胃的目的是（）

A、引起内脏血管收缩
B、降低纤溶酶的活性
C、延缓胃的排空
D、减少胃液的分泌
E、保护胃黏膜

单项选择题

The two main procedures of the receptionist are:
A.
Helping guests with Check-in and check-out. B.
Greet the guests and escorting guests to the room. C.
Helping guests with Check-in and concierge services. D.
Making reservations and responding to guests’ requests.