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【简答题】
TCP/IP参考模型包含4个功能层,右下往上依次为:___、___、___、___。
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皮皮学刷刷变学霸
举一反三
【单选题】Which vessels carry blood away from the ventricles of the heart?
A.
venules
B.
veins
C.
arterioles
D.
arteries
【判断题】In a normal state, arteries are elastic tubes that recoil and carry blood in pulsating waves, known as the pulse.
A.
正确
B.
错误
【单选题】Arteries carry blood _______.
A.
towards the heart
B.
away from the heart
C.
towards the lungs
D.
away from the right atrium
【判断题】There are three types of vessels, each with a specific function. Veins take blood from the heart, arteries carry blood back to the heart, and capillaries connect arteries and veins. Capill aries are t...
A.
正确
B.
错误
【简答题】Listen to the news and choose the best answer to each question you hear. 1. disorders n. [ 可数名词 , 不可数名词 ] an illness that causes a part of the body to stop functioning correctly 失调;紊乱;不适;疾病。例如: a bloo...
【单选题】Which vessels carry blood back to the atria?
A.
veins
B.
arteries
C.
arterioles
D.
capillaries
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