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【判断题】
用佛尔哈德法测定Cl-时，未加硝基苯保护沉淀，分析结果会偏低。 ( )A.
正确
B.
错误
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举一反三
【单选题】UNIT 3 PART 1 SECTION B TASK 3 Listen to the following passage. Choose the best answer to each question. (You are required to finish the question 6, question 7 and question 8 altogether.) 6. What hap...
A.
People work at a more interesting job.
B.
People are given a harder job to do.
C.
People are out of job.
D.
People have to go back to school to learn a new job.
【单选题】2 Question 1 to 3 are based on the conversation you have just heard.
A.
Air pollution
B.
Agriculture
C.
Industry
D.
Water
【单选题】3 Question 1 to 3 are based on the conversation you have just heard.
A.
Industry
B.
Cars
C.
Factories
D.
Agriculture
【单选题】1 Question 1 to 3 are based on the conversation you have just heard.
A.
Mine
B.
Gold
C.
Environment issue
D.
Water
【单选题】UNIT 1 PART 1 SECTION B TASK 3 Listen to the following passage. Choose the best answer to each question. (You are required to finish the question 6, question 7 and question 8 altogether.) What is the ...
A.
To tell the story of fraud.
B.
To persuade people to change their minds about donating.
C.
To let people know how much they should donate.
D.
To tell people the weakest link in society.
【单选题】在ZigBee网络中存在三种设备类型：协调器、路由器和终端设备，但是在ZigBee网络中只能有一个（ ），可以有多个（ ）和多个（ ）。
A.
路由器、协调器、终端
B.
协调器、终端、路由器
C.
路由器、终端、协调器
D.
终端、路由器、协调器
【简答题】ZigBee 网络中有三种类型的节点,分别是()、()和 ZigBee 终端节点。
【单选题】Conversation 1 Question 9 to 11 are based ont the conversation you have just heard. question 9.mp3:
A.
She had a job interview to attend.
B.
She was busy finishing her project.
C.
She had to attend an important meeting.
D.
She was in the middle of writing an essay.
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