风速的标准偏差与平均风速的比率称为。()
A、年平均;
B、日变化;
C、瑞利分布;
D、湍流强度。
参考答案:D
From the situation in this financial crisis,you can see _____China is totally not ______ she used to be a century ago.
A./;that
B.that;what
C.which;that
D.whethe;that
白芷主治()
A.风寒湿痹,风湿疹痒
B.风寒湿痹,经寒血滞
C.风寒湿痹,寒湿带下
D.风寒表证,阳虚外感
E.风湿痹痛,风湿疹痒