经期延长与漏下之别在于:经期延长以______为诊断依据。漏下是______。
参考答案:经期超过7天以上 或淋漓半月始净 周期正常 经血非时而下 淋漓不净 绵延数十天至数月不等
To some people, happiness is __________ by family and friends, while to others, it means ___________ success.
A.being surrounded ; achieving
B.being surrounded ; to achieve
C.to surround ; achieving
D.surrounding ; to achieve
下列情况下的酸既表现出强氧化性,又表现了酸性的是[ ]
A.常温下将木炭加入浓硫酸中
B.氧化亚铁(FeO)加入稀硝酸
C.常温下将铜粉加入浓硝酸中
D.氧化铝溶于稀硝酸