在杜邦分析体系中，假设其他情况相同，下列说法中错误的是（）。A．权益乘数大，则财务风

Sam woke up suddenly. Someone was moving around in the next room. “Maybe it’s his grandmother, getting a glass of water,” he told himself. But the next room was the living room. It wasn’t near the kitchen. Sam’s parents were away, and there was only his grandmother in the house with him. He looked at his watch. It was three thirty! Too early for his grandmother to get up!

He got out of bed and opened the door very quietly. The window was open. A man was standing near it and looking in the dark drawers. His grandmother kept her money there! He thought quickly. Yes, the radio! He turned it on and a man’s voice filled the room. The thief felt scared and jumped onto the window. Then he jumped down two floors to the ground. He gave a shout.

His grandmother was awake and she called the police right away. The thief couldn’t get up, because his leg was badly hurt. When the policemen came, they were very happy. “Great, Sam,” said a policeman. “This man is a famous thief.”

根据短文内容，判断正(T)误(F)。

小题1:The living room was next to Sam’s bedroom. It was near the kitchen.

小题2:Only Sam and his grandmother were sleeping in the house that night.

小题3:.Sam shouted, so the thief was scared and jumped out of the house.

小题4:The thief wasn’t hurt at all after he jumped out of the house.

小题5:The policemen were very happy because they caught the famous thief.

影响银汞合金强度的因素是（）

A.银合金粉的成分

B.粉汞调和比

C.充填压力大小

D.以上都是

E.小颗粒型复合树脂有光洁的表面和良好的色泽稳定性，广泛用于前牙

柴油发动机烧机油的原因可能是

A．凸轮轴后端漏油

B．曲轴箱通风不良

C．活塞与气缸壁间隙过大

D．正时齿轮室密封不严

血液中红细胞数与（）量低于正常值，称为贫血。

A、白细胞

C、血小板

B、血红蛋白

D、血清

限流压裂要限制排量不能太高。（）