气动阀位定位器利用负反馈原理调节的优点是()
A.精确度
B.提高灵敏度
C.提高稳定度
D.与工业控制机的联系不方便
参考答案:A, B, C
In Grammar-Translation Method, ______ is maintained as the reference system in the learning of the second language.
A.the first language
B.the second language
C.the target language
D.the foreign language
下列哪项是该患者水肿形成的因素
A.毛细血管通透性增加
B.低蛋白血症
C.局部静脉回流受阻
D.毛细血管滤过压升高
E.局部淋巴回流受阻