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【单选题】
0031400有几位有效数字A.
8
B.
5
C.
3
D.
7
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反馈参考答案：
举一反三
【简答题】选词填空。 Who What's How What 1. - are you? -Not so good. 2. - time is it now? -It's one o'clock. 3. - is he? -He's my uncle. 4. - colour is it? -It's green. 5. - for lunch? -Some noodles.
【单选题】He's a good teacher, but his inappropriate manner does tend ______ people.
A.
to annoy
B.
annoying
C.
annoy
D.
to annoying
【单选题】What is a good presentation manner?
A.
Repeatedly use an expression such as “You know”.
B.
Move rapidly up and down the hall when speaking.
C.
Stand in an easy, natural position.
D.
Toy with a necklace or pin.
【单选题】What is a good presentation manner?
A.
Stand in an easy, natural position.
B.
Repeatedly use an expression such as “You know”.
C.
Toy with a necklace or pin.
D.
Move rapidly up and down the hall when speaking.
【简答题】任务5-1的照明回路WL5的双管荧光灯安装工程量是()套
【判断题】红外热成像仪是利用红外探测器、光学成像物镜和光机扫描系统,在接触的情况下,接受物体表面的辐射信号转变为电信号,经电子系统处理传至显示屏上,从而得到与景物表面热分布相应的“实时热图像”。( )
A.
正确
B.
错误
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