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问题 单项选择题

大接地电流系统中双母线上两组电压互感器二次绕组应（）。

A.在各自的中性点接地

B.选择其中一组接地，另一组经放电间隙接地

C.均需要经放电间隙接地

D.只允许有一个公共接地点，其接地点宜在控制室

答案

参考答案：D

单项选择题

请根据下面短文回答第11～15题：
Reading for pleasure is the easiest way to become a better reader in English. It is also the most important way.
Some students say they don’t want to read for pleasure. They say they want to use their time to learn the rules of the language and new words. They say that pleasure reading is too easy.
Many experts(专家)say pleasure reading is very important for learning English. Dr. Stephen Krashen, a famous expert on learning languages, says that pleasure reading helps you learn many important things about English. Students learn more grammar and more words when they read for pleasure. They also learn more about good writing.
Dr. Krashen tells us that pleasure reading helps each student in a different way. Each student needs to learn something different. Pleasure reading makes it possible for each student to learn what he or she needs.
Reading for pleasure is not the same as studying. When you read for pleasure, you choose your own books, and you don’t have to remember everything. There are no tests on your pleasure reading books. Pleasure reading will help you:
—learn how English speakers use English
—read faster in English
—find examples of good writing in English
—learn new words
—learn about the cultures(文化)of English speakers

Some students don’t want to read for pleasure because they think______.
[A] they cannot learn grammar in pleasure reading
[B] pleasure reading is not interesting
[C] they have to spend more time reading
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单项选择题 共用题干题

男性，15岁，摔伤后左膝关节肿胀，疼痛。体检示左膝关节局部肿胀，压痛明显，膝关节及其周围有大片瘀斑，其兄有血友病A病史。

除下列哪项实验室检查外，均有助于该患者的诊断（）

A.CT

B.RT

C.PT

D.ACT

E.APTT
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