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【多选题】
探测器安装时应做到______。A.
探测器底座的穿线封堵
B.
探测器底座的穿线不宜封堵
C.
安装完毕后的探测器底座应采取保护措施
D.
以上均正确
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举一反三
【简答题】reading, readable The words and numbers in the table should be clearly__1____. I haven't had time to d much ___2___ lately.
【简答题】A、B、C、D是四种常见的物质。A是紫黑色晶体，将A加热时会产生无色无味的气体B，黑色固体C在B中燃烧发出白光，同时产生一种使澄清的石灰水变浑浊的气体D。试写出 (1) A、C的化学式A：___ ___；C：____ _ (2) 黑色固体C在B中燃烧的文字表达式___ _______ (3) 加热A产生气体B的文字表达式_____ _____
【简答题】I haven't had time to do much _________ lately.
【简答题】The words and numbers in the table should be clearly ____. I haven't had time to do much ____ lately.
【单选题】i haven't had time to do much _______lately.
A.
reader
B.
reading
C.
read
D.
readable
【单选题】________________ you haven't had much time to do this, I think you've done it very well.
A.
Unless
B.
Given that
C.
Whether
D.
When
【简答题】Compare each pair of words and complete the following sentences with the right one. reading, readable The words and numbers in the table should be clearly(1). I haven't had time to do much (2)lately.
【单选题】下列对Internet叙述正确的是___
A.
Internet就是www
B.
Internet是众多自治子网和终端用户机的互联
C.
.Internet就是信息高速公路
D.
Internet就是局域网互联
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