男，30岁。突发性中上腹刀割样疼痛3h，摄片发现膈下游离气体。体检时最可能发生的体征

肝脏细胞中，含量最多的化学元素是  [ ]

A．C

B．O

C．H

D．N

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Richard’s father died when he was five. Later he lost his mother. An old woman felt sorry for the poor boy and often helped him. Of course he had no money to go to school. He had to work for a rich farmer. The man paid him nothing except food and clothes  小题1:. He found some old books near the school and taught himself to read and write.

小题2:.It connected the village and the town. One morning people found there was a big stone on it. It stopped them from going to town. They had to move it away, or they had to cross the mountain if they had something to do in the town. But the stone weighed thirty tons at least and the strongest young men couldn’t do that.  小题3:  Richard looked at it carefully for a while and said, “I have a way to move it away.” But few men believed him. 小题4: Night fell and people went home. Only the boy stayed there. To their surprise, the villagers found the stone was gone the next morning. They didn’t know which spirit had moved it away小题5: .

“How could he?” the rich farmer called out, “ He’s only fifteen! He couldn’t move it at all.”

“He dug a big hole beside the stone” said the old woman, “And then he could easily push it into the hole!”  Looking at each other, the farmer couldn’t say a word.

A．There seemed to be nothing strange in the village.

B．An old woman said Richard had done it all.

C．There was a narrow path between two mountains.

D．But the boy didn’t lose heart.E. Some farmer even laughed at the boy.

F. The boy hoped he could do something for the villagers some day.

They discussed for a long time, but nobody knew what to do.

嚼吸式口器与咀嚼式口器在外形上极相似的两个部分是（）和（）

以下关于交接班制度描述正确的是（）。

A、交接班应认真、准时，接班人员未到岗，交班人员不得离岗

B、交班人员应事先做好交班准备，填好值班日志表

C、交接班人员应将交接内容逐项检查核实并确认无误，双方在交接班日志上签字后，交班人员方可离岗

D、交班前未处理完的故障/事故，应交由接班人员处理，直至故障/事故消除或处理告一段落

某公司年初产权比率为60%，所有者权益为4000万元；年末所有者权益增长4%，产权比率上升4个百分点。假如该公司当年实现净利润500万元，则当年度的总资产报酬率为（）%。

A.7.81

B.7.56

C.7.50

D.7.58