下列是阴道灌洗护理操作的注意事项，请问哪一项是错误的
A. 妊娠期，必要时也可以阴道灌洗
B. 灌洗液的温度一般为41～43℃
C. 灌洗筒至床沿的距离不超过70cm
D. 采取的体位为膀胱截石位
E. 未婚女性一般不做阴道灌洗，必要时可用导尿管代替灌洗头
查看答案
会阴热敷时，一次热敷的时间一般为
A. 8～10分钟
B. 12～15分钟
C. 15～30分钟
D. 15～20分钟
E. 30～35分钟
Which of the following suggests that a nation will export the commodity in the production of which a great deal of its relatively abundant and cheap factor is used?
A. The Linder theory
B. The product life cycle theory
C. The MacDonald theory
D. The Heckscher-Ohlin theory
According to Staffan Linder, trade between two countries tends to be most pronounced when the countries:
A. find their tastes and preferences to quite harmonious.
B. experience economies of large-scale production over large output levels.
C. face dissimilar relative abundances of the factors of production.
D. find their per capita income levels to be approximately the same.
Which of the following is a longrun theory, emphasizing changes in the trading position of a nation over a number of years?
A. Theory of factor endowments
B. Comparative advantage theory
C. Theory of the product cycle
D. Overlapping demand theory
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