网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Blaire, Chad, Erin, and Jordan randomly arranged in four seats at the front row of the classroom. What is the probability that Chad and Blaire are sitting next to each other?
A
0. 15
B
0. 25
C
0. 35
D
0. 4
E
0. 5
参考答案
参考解析
解析：
There are a total of 4 × 3 × 2 × 1 = 24 ways to arrange four people. Let B = Blaire, C = Chad, E = Erin, and J = Jordan. The different arrangements where Chad is next to Blaire are:
BCEJ, BCJE, CBEJ, CBJE, JBCE, EBCJ, JCBE, ECBJ, EJBC, JEBC, EJCB, and JECB.
There are 12 ways for Chad to be seated next to Blaire. P (Chad next to Blaire) =12/24 = 0. 5
There are a total of 4 × 3 × 2 × 1 = 24 ways to arrange four people. Let B = Blaire, C = Chad, E = Erin, and J = Jordan. The different arrangements where Chad is next to Blaire are:
BCEJ, BCJE, CBEJ, CBJE, JBCE, EBCJ, JCBE, ECBJ, EJBC, JEBC, EJCB, and JECB.
There are 12 ways for Chad to be seated next to Blaire. P (Chad next to Blaire) =12/24 = 0. 5
更多 “单选题Blaire, Chad, Erin, and Jordan randomly arranged in four seats at the front row of the classroom. What is the probability that Chad and Blaire are sitting next to each other?A 0. 15B 0. 25C 0. 35D 0. 4E 0. 5” 相关考题
考题
They've _______ her to be operated on by the best doctors.
(A)arranged to(B) arranged of(C) arranged in(D) arranged with
考题
They went to Japan (). Now they must be ().
A、by sea, at seaB、by the sea, at the seaC、by the sea, at seaD、by sea, at the sea
考题
What must be carried out in order to launch and inflate an inflatable liferaft?A.Pull on the hydrostatic release，pull on the sea painterB.Push on the hydrostatic release，pull on the sea painterC.Push on the hydrostatic release，push on the sea painterD.Pull on the hydrostatic release，push on the sea painter
考题
______ is an area within the radiotelephone coverage of at least one VHF coast station in which continuous Digital Selective Calling is available．A.Sea Area A1B.Sea Area A2C.Sea Area A3D.Sea Area A4
考题
共用题干
Explore JordanWadi Rum is the name given to a valley cut into the sandstone and hard rock in southwest Jordan.______(46)The name Rum most likely comes from an Aramaic word meaning"high" or"elevated".The area around Wadi Rum is now also one of Jordan's most important tourist des-tinations, and attracts an increasing number of foreign tourists, particularly trekkers（越野者）, but also for camel safaris（旅行）or simply day-trippers from Aqaba or Petra. In contrast,there are almost no local or Arab tourists through nearby disi attracts young people from Amman at the weekends.Popular activities in the desert environment include camping under the stars,riding Arab horses,and rock-climbing amongst the massive rock formations. Jebal Rum(Jebal means moun- tain)is 1,574 meters above sea level.______(47)But Jordan is not simply a desert environment-it also contains the area which is the lowest point to the face of the Earth-the incredible Dead Sea,popular with tourists for swimming. ______(48)Once the waters reach the Dead Sea they are landlocked and have nowhere to go,so they evaporate,leaving behind a dense,rich cocktail（混合的）of salts and minerals that sup-ply industry,agriculture and medicine with some of its finest products. Once again,tourists bene- fit and can participate in water spa treatments and water therapies.The Dead Sea is located in the syro-African Rift,a 4,000-mile fault line in the Earth's crust. The lowest point of dry land on Earth is the shoreline of the Dead Sea at 1,300 feet below sea level. Because the lake is at the lowest point,this means that water does not drain from it. ______(49)Figures for the Dead Sea's salinity（盐度）today range from 25% to 35%.But the greatest tourist attraction is the incredible city of Petra.______(50)It is a vast unique city,carved into the sheer rock face by the Nabataeans,an industrious Arab people who settled here more than 2,000 years ago,turning it into an important junction for the silk,spice and other trade routes that linked China,India and southern Arabia with Egypt,Syria,Greece and Rome .Today,visitors can marvel at the architecture and explore life as it was thousands of years ago.______(47)A: It is the largest wadi(riverbed)in Jordan.B: It is the second highest peak in Jordan,rising directly above the Rum valley opposite Je-bal Urn Ishrin.C: This vast stretch of water receives a number of incoming rivers,including the River Jor-dan.D: The area has been used as a background setting in a number of films.E: Every day seven million tons of water evaporate from the lake,but the minerals remain causing the salt content to increase.F: It is without doubt Jordan's most valuable treasure.
考题
Air Jordan 32不仅能够引领场外搭配的潮流还具有着出众的实战性能，它的设计灵感来源于以下哪双Air Jordan系列球鞋？（）A、Air Jordan1B、Air Jordan2C、Air Jordan3D、Air Jordan4
考题
Air Jordan32的中底运用了Jordan品牌最顶尖的科技来打造强劲爆发力，以下哪组科技配置是正确的？（）A、前后掌ZOOM气垫B、前后掌ZOOM气垫+FLIGHTSPEED科技C、后掌ZOOM气垫+FLIGHTSPEED科技D、前后掌AIR气垫+FLIGHTSPEED科技
考题
Currently， different types of multimodal transport operations involving different combinations are taking place.（）transport does not refer to multimodal transport.A、Sea/airB、Sea/roadC、Sea/railD、Sea/sea
考题
单选题The GMDSS defines four sea area based on the（）.A
location and capacity of the facilities located on board shipsB
Position and type of a sincre sintionC
Capacity and location of shore based communication facilitiesD
Position and capacity of mobile communication stations
考题
单选题水手在船首进行了望。（）A
Sailors keep uplook at sea.B
Sailors keep outlook at sea.C
Sailors keep lookout at sea.D
Sailors keep lookup at sea.
考题
单选题The fresh water generator produces fresh water （）.A
by cooling sea waterB
by heating sea waterC
by evaporation of sea waterD
by purifying sea water
考题
单选题A student is instructed to arrange four cards in a row on a table. She has six cards to choose from, each of which has a different color: black, red, blue, green, yellow, and brown. If the student follows these instructions but otherwise chooses her cards randomly, what is the probability that her arrangement will be blue, red, yellow, and green, in that order?A
1/90B
1/ 180C
1/360D
1/540E
1/720
考题
单选题If the letters L, O, G, I, and C are randomly arranged to form a five-letter “word,” what is the probability that the result will be the word LOGIC?A
1/120B
1/24C
1/5D
1/4E
1/2
考题
单选题The cylinder covers are secured by eight elastic holding down arranged in four pairs（）A
nutsB
screwsC
studsD
flanges
考题
单选题（） system is arranged to ensure that water can be drawn from any tank or the sea and discharged to any other tank or the sea as required to trim the vessel.A
The domestic waterB
Bilge waterC
Oil transferD
The ballast
考题
单选题What must be carried out in order to launch and inflate an inflatable liferaft? （）A
Pull on the hydrostatic release，pull on the sea painterB
Push on the hydrostatic release，pull on the sea painterC
Push on the hydrostatic release，push on the sea painterD
Pull on the hydrostatic release，push on the sea painter
考题
单选题According to the international regulations concerning the prevention of pollution of sea areas from ships, the disposal into the sea of all plastics is （）.A
welcomeB
admitted in some special sea areasC
prohibitedD
acceptable
考题
单选题Where tanks are arranged for either oil or ballast （） must be fitted in the pipe so that only the ballast main or the oil transfer main connected to the tank.A
a sea water chestB
a change-over chestC
a buffer tankD
a three-way valve
热门标签
最新试卷