【单选题】患者女,69岁,住院1月余,因外周血管均已破损,需长期静脉输液,行中心静脉穿刺,上肢首选的进针血管是
【单选题】足月新生儿,生后2周。为预防维生素D缺乏佝偻病的发生,应建议每日口服维生素D的剂量是( )
【单选题】为预防佝偻病的发生,维生素D的剂量为每日
【判断题】虚拟变量只能作为解释变量引入计量经济模型。
【单选题】马克思与1818年_月_日出生于德国__
【单选题】为预防佝偻病的发生,维生素D的预防剂量一般为每日
【单选题】China, France and the United States are considered to______.
A.
be large producers of applesauce
B.
be large producers of apples
C.
have the longest history in apple production
D.
have the coldest winter among apple producing countries
【判断题】感觉阈限在营销中的应用非常广泛,比如,提价要控制在感觉阈限之内,降价要超出消费者的感觉阈限。
【单选题】20110113OSI七层模型中,提供面向用户连接服务的是 (13) 。
【单选题】—Did you see Mr Smith when you were in France? —No. When I _______ France, he _______ to China. [ ]
A.
had arrived in; had gone