【单选题】Classical trade theory emphasized which of the following as an underlying explanation of the basis for trade?
A.
Productivities of labor inputs
B.
Tastes and preferences among nations
C.
Changes in technologies over time
D.
Quantities of economic resources
【单选题】患儿男, 7 岁。以少尿、 头痛3天,呕吐2次,惊厥1次就诊。观察患儿嗜睡,颜面水肿,测血压为135/105mmHg, 尿检可见大量红细胞,确诊为急性肾小球肾炎。该患儿出现惊厥的原因是:
【单选题】患儿男,7岁。以少尿、头痛3天,呕吐2次,惊厥1次就诊。观察患儿嗜睡,颜面水肿,测血压为135/105mmHg,尿检可见大量红细胞,完善其他相关检查,确认为急性肾炎。该患儿出现惊厥的原因是
【单选题】According to the classical theory of international trade
A.
only countries with low wages will export.
B.
only countries with high wages will import.
C.
countries with high wages will have higher relative prices of all goods.
D.
All the above are false.
【判断题】The classical trade theories stand on developed countries’ ground?
【单选题】带DSC终端的VHF设备中,字符中码元的“传号”对应的频率是:
【单选题】患儿男,7岁。以少尿、头痛3天,呕吐2次,惊厥1次就诊。观察患儿嗜睡,颜面水肿,测血压为135/105mmHg,尿检可见大量红细胞,完善其他相关检查,确认为急性肾炎。下列对该患儿的护理措施正确的是
【单选题】普通照相机镜头上标注的光圈数有5.6、8、11、12,在曝光时间相同的条件下,()光圈曝光量最大。
【单选题】不符合三阶梯止痛治疗方案用药原则的是()