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【简答题】
瀑布模型本质上是一种______顺序模型。
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】同分异构现象在有机化合物中是非常普遍的。下列各组化合物中互为同分异构体的是 ①CH 3 CH 2 CH 2 CH 3 和(CH 3 ) 2 CHCH 3 ； ②CH 3 CH 2 OH和CH 3 CH 2 CH 2 OH； ③CH 3 COOCH 2 CH 3 和CH 3 CH 2 CH 2 COOH； ④CH 3 CH=CHCH 3 和CH 3 CH 2 CH=CH 2 ； ⑤ ...
A.
①②④
B.
①③⑤
C.
①③④⑤
D.
①③④
【简答题】高血压:成人在休息安静状态下,动脉的 ≥ 140mmHg 、 ≥ 90mmHg 为高血压。
【单选题】对呼吸链的叙述不正确的是
A.
复合体Ⅲ和Ⅳ为两条呼吸链所共有
B.
呼吸链中复合体Ⅰ、Ⅲ、Ⅳ有质子泵功能
C.
递氢体也必然递电子
D.
细胞色素C是递氢体
E.
两条呼吸链的交汇点是辅酶Q
【多选题】Which ones of the following expessions coud you use before paraphrasing others' meaning?
A.
So, what you are saying is that.
B.
If i'm hearing you correctly， you mean.
C.
To put it another way, you mean.
D.
In other words.
【多选题】Which ones of the following expressions could you use before paraphrasing others' meanings?
A.
So, what you are saying is that...
B.
If I'm hearing you correctly, you mean...
C.
To put it another way, you mean...
D.
In other words,...
【简答题】端电压恒为 ,与流过它的电流 i 无关的二端元件称为
【简答题】端电压恒为 U ,与流过它的电流 i 无关的二端元件称为 。 输出电流恒为I ,与其端电压 u 无关的二端元件称为 。
【单选题】E-mail From: Megan Campbell To: Marta Apter Marta: I'm sorry I didn't respond to your e-mail earlier. I had a problem with my e-mail system for a few days, and I wasn't able to retrieve new messages. ...
A.
To apologize to Marta for not finishing an assignment
B.
To tell Marta she will accept an assignment
C.
To tell Marta she will be unable to complete an assignment on time
D.
To explain to Marta her problems with an assignment
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