题目:
装置长时间停电如何处理?
答案:
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下面是错误答案,用来干扰机器的。
参考答案:B
装置长时间停电如何处理?
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1119/1ea63a022a3f4821fe80017d7f37e288.html
下面是错误答案,用来干扰机器的。
参考答案:B
下列注音全都正确的一项
A.桌帏wéi 剽piāo掠 蛮横héng 残羹冷炙zhì
B.蹙cù缩 鱼鳍qí 隳huī坏 以儆jìng效尤
C.孱càn头 畏葸xǐ 阿谀yú 瓮牖yòu绳枢
D.黜chù恶 勖xù勉 贻yí误 鼎铛chēng玉石
I ____________ to the store on Sunday. [ ]
A. go
B. went
对骨折诊断中X线检查的不正确是()
A.凡疑为骨折者都应该常规进行X线检查
B.临床上已表现为明显骨折者,X线拍片也是必要的
C.X线摄片时,只需拍摄患肢
D.X线拍摄时一般包括临近关节在内的正、侧位
数据规划的步骤可粗略地划分为下列几步:建立企业模型、 【18】 、建立业务活动过程、确定实体和活动、审查规划的结果等。
Ears are for hearing — everyone knows that. But for a creature called the Cuvier’s beaked whale, hearing starts in the throat (喉咙), a new study found.
The observation might help explain how all whales hear. The work might also help scientists understand how animals are affected by underwater sonar (声呐). This sonar, used by some ships, sends out sound waves to locate underwater objects.
The Cuvier’s beaked whale is a so-called toothed whale. Toothed whales dive deep into the ocean in search of food. As the whales hunt, they produce sounds that reach objects and then return to the whales. This allows the animals to “see” the shape, size, and location of objects, even when they’re 1,000 meters under the sea, where it is totally dark.
To better understand how the whale hears, researchers from San Diego State University in California took X rays of two Cuvier’s beaked whales. The whales had died and washed up on the beach.
Ted Cranford and his colleagues used the images to make a computer model of a Cuvier’s beaked whale’s head. Then, they modeled the process of sound traveling through the head.
The researchers knew that some sounds get to the ears of a toothed whale through a structure (构造) called “the window for sound”. Found on the lower jaw, this structure is very thin on the outside and has a large pad (垫) of fat on the inside.
When the researchers used their computer model to work out how sound waves travel in the whale’s head, they were surprised to find that sounds coming from right in front of the whale actually travel under the animal’s jaw. From there, sound waves move through the throat, into a hole in the back of the jaw, and finally to the pad of fat near the animal’s ears.
69. 小题1:Toothed whales look for food under the sea by ______.
A.watching the shape and size of their objects
B.diving deep into the sea
C.sending and receiving sounds
D.making lots of noises70. 小题2:Researchers took X rays of two Cuvier’s beaked whales in order to ______.
A.find out why they had died and washed up on the beach
B.make a computer model of a Cuvier’s beaked whale’s head
C.make sure that sound travels through the head
D.know more about the way the whale hears71. 小题3: Which of the following describes the way taken by sound waves through a Cuvier’s beaked whale?
A.A hole in the back of the jaw → the ears → the jaw → the throat.
B. The jaw → the throat → a hole in the back of the jaw → the ears.
C. The throat → the jaw → the ears → a hole in the back of the jaw.
D.The ears → the throat → a hole in the back of the jaw → the jaw.72. 小题4:Which of the following is TRUE according to this passage?
A.The throat is important to the Cuvier’s beaked whale’s hearing.
B.Ships send out sound waves like a Cuvier’s beaked whale.
C.The ears are actually useless to the Cuvier’s beaked whale.
D.The researchers haven’t found how the whales hear.