工程中对钢筋进行冷拉或冷拔加工是为了______。 A.提高钢材强度 B.节约钢材

题型:多项选择题

问题:

工程中对钢筋进行冷拉或冷拔加工是为了______。

A.提高钢材强度

B.节约钢材

C.提高钢材硬度

D.提高钢材韧性

E.降低钢材硬脆性

考点:注册资产评估师建筑工程评估基础建筑工程评估基础
题型:多项选择题

在账户记录上,中央证券存管机构一般以( )为单位,采用电脑记账方式记载其送存的证券。

A.证券发行人
B.证券公司
C.投资人
D.证券交易所

题型:多项选择题

有一群鸡和兔,腿的总数比头的总数的2倍多18只,兔有几只?

题型:多项选择题

NASA is moving ahead with plans to put a long-armed lander on Mars’ icy north pole to search for cluesfor water and possible signs of life.

The $386 million Phoenix Mars is planned to touch down in the Martian arctic in 2008. The stationary probe will use its robotic arm to dig into the icy land and pick up soil samplesto analyze. In 2002, the Mars Odyssey orbiter spotted evidence of ice-rich soil near the arctic surface.

Scientists hope the Phoenix mission will find clues to the geologic history of water on the Red Planet and determine whether microbesexisted in the ice.

Phoenix will be the first mission of the Mars Scout program, a renewed, low-cost effort to study the Red Planet. “The Phoenix mission explores new territory in the northern plains of Mars analogous to the permafrost regions on Earth,” Peter Smith said.

True to its name, Phoenix rose from the ashes of previousmissions. The lander for Phoenix was built to fly as part of the 2001 Mars Surveyor program. But the program broke down after the well-known disappearance of the Mars Polar Lander in 1999. The Polar Lander lost contact during a landing attempt near the planet’s south pole after its rocket engine shut off prematurely, causing the spacecraft to fall about 130 feet to almost certain destruction.

The Phoenix probe had been in storage at a Lockheed Martin clean room in Denver before it was reused for its present mission. It will carry science instruments that were designed for the Mars Surveyor program including an improved panoramic camera and a trench-digging robotic arm. Phoenix will lift off from the Kennedy Space Center in August 2007 and land on the planet nine months later.

Notes:

①    clue  n. 线索

②    sample  n. 标本,样品

③    microbe  n. 微生物

④    previous  adj. 先前的

小题1:The passage mainly tells readers that _________.

A.clues of water will be found in Phoenix

B.Phoenix will be sent to find clues of water on Mars

C.August 2007 will see Phoenix lift off

D.the Mars Scout program will be carried out小题2: The underlined word “prematurely” (paragraph 5) means _________.

A.on time

B.behind the time

C.out of work

D.ahead of time小题3: According to the passage, we know Phoenix will land on Mars _________.

A.in May 2008

B.in August 2007

C.in August 2008

D.in September 2008小题4: According to the passage, the name “Phoenix” is after the meaning of _________.

A.rebirth

B.death

C.energy

D.hope小题5:After Phoenix lands on Mars, we can infer it will firstly _________.

A.find soil samples and send them to the earth

B.look for the icy land to dig for the soil samples

C.take photos and send them to the earth

D.find the remains of the Mars Polar Lander

题型:多项选择题

张三与李四需要进行通信。张三与李四向外通讯线路,被王五截获。张三李四在不知情的情况下通过王五,进行二者之间的通信,却不知王五在将通信内容发送到预期接收人之前监控和读取通信内容,王五这种行为被称作()。

A.搭线监听

B.中间人攻击

C.泛洪攻击

D.DDoS

题型:多项选择题

经营企业与加工企业不在同一直属海关管辖的区域范围的,应当按照海关对()加工贸易的管理规定办理手册设立手续,即经营企业先向所在地主管海关提出异地加工贸易申请,经所在地主管海关审核后,凭相关单证向加工企业所在地主管海关办理加工贸易手册设立手续。

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