下列财务比率中，反映企业营运能力的是（）。 A.资产负债率 B.流动比率 C.营业收

阅读下面两篇短文，从各小段所给的四个选项中选出能回答所提问题或完成所给句子的最佳答案。

Let’s meet the Johnson’s family. Mr.Johnson is a manageer(经理)in a big company(公司). He works very hard. He is very busy. He makes much money.But he is always tired(劳累的). He says to his friend,“I want to be a reporter because I like talking to people.”

His wife Mrs. Johonson is a good doctor .She works in children’ Hospital. She likes Chinese medicine(中医) very much.

The Johnsons have a daughter called Salina.She is a teacher of French. She always tells her students many interesting stories.They are good friends. They like her.

小题1:There are ______ people in the Johnsons.

A．four

B．three

C．two

D．five小题2:Mr.Johnson is a ______.

A．worker

B．doctor

C．reporter

D．manager小题3:Mr.Johnson ______.

A．can make much money

B．is very tired

C．wants to be a reporter

D．A,B and C小题4:How does Mrs.Johnson like Chiese medicine?

A．She likes it a lot.

B．She likes it a little.

C．She does n’t like it at all.

D．She doesn’t like it.小题5:What does Salina do?

A．A doctor

B．A student

C．A teacher

D．A reporter

男，7岁，外伤后1个月，当时右上臂上部局部肿痛，行夹板固定。根据CT平扫片，最可能的诊断为（）

A.骨囊肿

B.骨纤维异常增殖症

C.动脉瘤样骨囊肿

D.干骺端结核

E.骨肉瘤

下列关于脑梗塞的描述哪一项不正确（）。

A.CT表现为低密度或等密度改变

B.MRI急性期呈长T₁、长T₂信号

C.梗塞灶与病变动脉供血区一致

D.梗塞灶常呈楔形或扇形

E.增强扫描后各期脑梗塞病灶均不强化

若将三相三角形接线的电动机改为星形接线，则功率为改接前的（）。

将下面Shell程序段中的空缺部分补齐，使得它可以将指定的一个或多个输入文件的内容依次添加到输出文件的末尾，如果指定的输出文件不存在，则程序应自动产生一个输出文件。
if ["$#" -lt 2 ];then
echo "usage $0 ＜output-file＞ ＜input file 1＞ [＜input file 2＞…]"
exit 0
fi
output="$1"
shift
for i in (61) ; do
if[-e "Si"];then # or use ’-a $i’
cat (62)
fi
done

A．"$i"＞$output

B．"$i"＞＞$output

C．$I＞$output

D．$I＞＞$output