砂仁具有的功效是：（）
A.温肝
B.暖肾
C.温肺
D.温中
E.回阳
参考答案：D
He always _____ TV in the evening. He _____ listening to the radio. [ ]
A. watch, don't like
B. watches, doesn't like
C. watching, don't like
D. watch, doesn't like
737-700/800只有一个空调组件工作时（）
A.能够保持飞机增压
B.能够保持可接受的温度控制要求
C.在飞行高度超过FL250后不能保持飞机增压
