高压开关是当压力（）时，开关动作
A、升高至设定压力
B、降低至设定压力
C、变化
D、不变
参考答案：A
患者，女，30岁。误服氯丙嗪100片后，出现神志恍惚，BP90/50mmHg，HR120次/分。下列哪一项不是氯丙嗪中毒的临床表现()
A.震颤麻痹
B.静坐不能
C.急性肌张力障碍
D.直立性低血压
E.以上都不是
The recent conference on the effective use of the seas and oceans was another attempt resolving major differences among countries with conflicting interests.()
A. resolve
B. resolves
C. to resolve
D. being resolved
