过饱和溶液浓度与饱和溶液浓度只差称为（）。A、碳化度 B、过饱和度 C、反应推动力

Look at this picture, it is Tony’s bedroom. It is small, but it is very nice. There is a desk and a bed in it. There is a computer and some books on the desk. His coat is on the bed. Where is his bag? It is on the wall. What’s that? Oh, it’s a cap! It looks like a cat.

根据短文判断句子正(T)误(F).

小题1:This is Tony’s bedroom.

小题2:There is a desk and a chair in it.

小题3:His computer is on the desk.

小题4:His coat is on the chair.

小题5:Tim has got a cat.

如果以海平面为标准划分，生物圈的范围从上往下可以分为三部分：______、______和______，其中一切陆生生物的“立足点”是______．

患者女性，36岁，心悸、胸闷1年，有甲状腺功能亢进病史。心电图如图5-26所示，应诊断为（）。

A.频发房性期前收缩

B.多源房性心动过速

C.心房颤动

D.心房颤动合并三度房室传导阻滞

E.心房扑动伴不同房室传导比例

某产妇，30岁，人工流产后半年，一直有断续 * * 流血。术后一直避孕，现尿妊娠试验阳性，查子宫稍大、软，胸部X线可见两肺中下部有散在棉絮团影，本病最可能的诊断是

A．恶性葡萄胎
B．侵蚀性葡萄胎
C．绒毛膜癌
D．吸宫不全
E．先兆流产合并肺结核

氧气瓶内高压氧气的压力最高可达到（）MPa。

A.0.1

B.1.0

C.15

D.20