图中所示硬脊膜穿破后的头痛的发生原理，请问其发生率约为（） A.10% B.11%～

(一)

资料1

大连音乐器械公司(3133910194)从香港进口一批无接头电缆(属于法定检验检疫商品，自动进口许可管理商品)用于改造车间线路，货物于2004年12月28日在香港装船，于2005年1月3日在大连港入境。大连音乐器械公司委托大连某货运代理公司持(4403—2005—11848)号《机电产品自动进口许可证》(代码为O)和470400105077183号《入境货物通关单》(代码为A)于次日向海关申报进口。

该货物法定计量单位为千克；成交计量单位为米；保险费为250美元。

(二)

资料2

(三)

资料3

(四)

资料4

SAY：TOTAL U．S．DOLLARS ONE HUNDRED FIFTY-EIGHT THOUSAND FIVE HUNDRED

THIRTY EIGHT

SHIPPING MARKS AS PER PACKING LIST

AIR SHIPMENT FROM HONG KONG TO

DALIAN，CHINA

(五)

资料5

*THESE COMMODITIES，TECHNOLOGY OR SOFTWARE WERE EXPORTED FROM HONG KONG IN ACCORD- ANCE WITH THE EXPORT ADMINISTRATION REGULATIONS．DIVERSION CONTRARY TO H．K LAW PROHIB- ITED．

PACKING：TO BE PACKED IN SPECIAL WAY SUITABLE FOR TRANSPORTATION AND WELL PROTECTED A- GAINST MOISTURE，AND SHOCKS．THIS DOCUMENT IS CERTIFIED TO BE CORRECT AND TRUE AND SHIP- MENT OF THE GOODS ORIGINATED IN THE UNITED STATES OF AMERICA

MODETL ELECTRONlCS CO．，LTD

请根据以上资料，选择以下栏目正确选项

“数量及单位”栏应填报（）。

A.15000米

B.779.50千克

C.779.50千克/15000米

D.779.5千克 第一行 15000米 第三行

In northern Scotland there is a deep lake called Loch Ness. It is more than 200 metres deep and it is the deepest lake in the United Kingdom. People say a huge monster (妖怪) lives in the dark, cold water. It weighs more than 1,000 kilos and is at least ten metres long. It has a dark gray colour. Some people say that it looks like a snake. Many people travel to Loch Ness to look for this strange monster, but only a few people say that they saw it. No one knows whether (是否) these people really saw it or not.

The Loch Ness Monster is a famous story. People first told it over 500 years ago, but it became popular only in the twentieth century (世纪). In 1993, a couple reported that they saw a big monster in the middle of the lake. From then on, many people said that they saw a monster in Loch Ness. A few people took photos, but some of them weren’t real photos. During the 1960s, people set up an organization to find out the truth. They took many photos and made movies, but they weren’t able to find a monster.

There is no real evidence (证据) that there is a monster in Loch Ness, but there is also no evidence that there is not. One thing is true about Loch Ness: there are lots of curious (好奇的) people going there every year.

小题1: From the passage, we know Loch Ness is the name of _______.

A．a huge monster

B．a lake

C．a river

D．a country小题2: The second paragraph (段) mainly talks about ______.

A．who first told the story of the Loch Ness Monster

B．when people took photos of the Loch Ness Monster

C．why people set up an organization in the 1960s

D．how the story of the Loch Ness Monster became popular小题3: Which of the following is NOT true?

A．The Loch Ness monster weighs less than 1,000 kilos.

B．People began to tell the story more than five centuries ago.

C．People are not sure whether there is a monster in Loch Ness.

D．Many visitors are interested in the story of the Loch Ness monster.

GPS卫星导航仪接收到由一个以上的传播路径的信号的合成信号，使信号特性变化而产生测量误差称为（）。

A．导航仪噪声

B．信号传播误差

C．群延迟

D．多径效应

欺诈案件的调查要多久？

σ⁵⁴因子可以在无核心酶时独立结合到启动子上。 ( )