DCS中D代表的英文单词是()。
A、Digital
B、Distributed
C、Discrete
D、Diagnose
参考答案:B
—Here is your red kite. — .[ ]
A. It is there
B. No, it isn't
C. Yes, it is
D. Thanks
关于腹式呼吸和缩唇呼吸的描述,下列哪项不正确()
A.由鼻吸气
B.吸气时腹肌收缩
C.呼气时缩拢口唇
D.应尽量用力快速呼气
E.呼气时腹部内陷