下列连线不正确的是（ ） A． B． C． D．

设置和登记账簿的主要作用有（）。

A.记载和储存会计信息

B.分类和汇总会计信息

C.检查和校正会计信息

D.编报和输出会计信息

如图是“×××钙片商品标签图”

×××儿童咀嚼片 （60片装）

[主要成分]碳酸钙，维生素D [规格]2.5g/片，每片中含碳酸钙≥1.24g，维生素D 100l．U． [食用方法]嚼食，每天一片 [功效]补钙

根据标签内容信息，计算回答下列问题：（结果精确到0.1）

（1）主要成分碳酸钙中钙元素的质量分数为______，每片中至少含钙元素的质量为______g．

（2）小红同学为测定其碳酸钙的含量标注是否属实，她取出4片钙片，研碎后放入烧杯中，逐滴加入稀盐酸，至不再放出气体为止，共用去稀盐酸40.0g．称量烧杯中剩余物为47.8g（不含烧杯质量，假定钙片其他成分不与稀盐酸反应）．

试计算：①生成二氧化碳的质量______；

②稀盐酸中溶质的质量分数______；

③通过计算判断钙片中碳酸钙的含量标注是否属实______．

Norm Pethrick, a 36-year-old man in Australia’s northern city Darwin, was praised on Thursday for jumping onto a crocodile’s back to save his wife Wendy at Litchfield National Park, a popular tourist spot southwest of Darwin, a local newspaper reported.

Ms Pethrick was standing on a river bank Wednesday afternoon when the saltwater crocodile lunged (扑), locking its jaws on both her legs as it tried to drag her underwater.

Norm Pethrick, who with his wife had been collecting water, immediately went to help her. He jumped onto the back, poked (戳) the eyes of the crocodile and finally got his wife free.

Ms Pethrick was later taken to Royal Darwin Hospital for a medical treatment. The doctors said she was suffering eight puncture wounds (伤口) in her right leg, a puncture wound in her left leg and a serious cut to one of her fingers.

“This could have been a fatal and tragic situation,” said the general manager of Royal Darwin Hospital (RDH), Dr Len Notaras, according to a local report.

He said Ms Pethrick was saved by her husband’s “quick and diligent actions”.

Dr Notaras also said she would remain in hospital for three to four days and have an operation to clean the wounds, which are easy to get infected because of bacteria (细菌) on the teeth of the crocodile.

小题1:This passage is most likely to be found in _____.

A．a travel guide

B．a newspaper

C．a textbook

D．a novel小题2:The crocodile attacked Ms Pethrick when she was ______.

A．standing on the river bank

B．swimming in the river

C．watching the crocodile

D．fishing in the water小题3:Which of the following statements is TRUE about Ms Pethrick?

A．Her eyes were badly poked.

B．She had eight wounds altogether.

C．One of her fingers also got hurt.

D．One of the crocodile’s teeth was found in her leg.小题4: According to the passage, Norm Pethrick can be described as following EXCEPT _______.

A．brave

B．diligent

C．quick

D．humorous小题5: Which of the following would be the best title for this passage?

A．A man saves wife’s life from crocodile’s jaws

B．The husband should save the wife

C．A crocodile is not so dangerous as people imagine

D．Human beings can beat crocodiles sometimes

尖峰电流指单台或多台用电设备的起动电流。一般取( )作为计算电压波动、电压降以及选择电器和保护元件的依据。

A．起动电流的周期分量

B．起动电流的最大值

C．起动电流的平均值

D．起动电流的均方值

网络工作站主要完成（）功能。

A.数据处理

B.多媒体互动

C.引导

D.分配IP