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【简答题】
已知以下同学和他们每门课程的成绩,请以姓名为 键、成绩列表为值创建字典,并完成以下习题: 1.输出每个同学对应的各科成绩 2.输出每个同学指定科目的成绩
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举一反三
【判断题】RC桥式正弦波振荡电路(如下图)的振荡频率是
A.
正确
B.
错误
【单选题】时间冗余所采用的方法是
A.
硬件重复
B.
程序回卷
C.
附加信息
D.
多份程序
【单选题】He is working hard, _____ will make him pass the final exam. [     ]
A.
that
B.
which
C.
for which
D.
who
【单选题】Would the news _____he failed to pass the exam bother you?
A.
which
B.
that
C.
of which
D.
on which
【单选题】As to the format of the exam, which of the following statements is true?
A.
It will include multiple-choice questions.
B.
It will consist of three multiple-choice questions and five essay questions.
C.
Students will have to answer all the essay questions.
D.
Students will be required to answer three of the five questions.
【简答题】下列动物中胸腔纵隔将胸腔分为左右两室,且互不相通,暴露心脏时动物不需做人工呼吸,这种动物是A. 4
【单选题】The thing she wasn't sure was that she failed in this exam. [     ]
A.
that
B.
which
C.
about which
D.
in which
【多选题】如图所示正弦波振荡电路,以下说法正确的是
A.
电路为RC桥式振荡电路,振荡频率f=1/(2*pi*R*C)
B.
若R1短路,则输出波形失真近似为方波
C.
若R1开路,则无输出波形
D.
若Rf短路,则输出波形失真近似为方波
E.
若Rf开路,则无输出波形
【单选题】The boy the teachers considered _________ was caught __________ in the exam, which surprised us very much.
A.
to be the best; cheating
B.
as the best student; to cheat
C.
being the best; cheating
D.
as a good student; to cheat
【单选题】下列动物中胸腔纵隔将胸腔分为左右两室,且互不相通,暴露心脏时动物不需做人工呼吸,这种动物是
A.
B.
C.
D.
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