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【单选题】
以下关于火灾声光警报器说法,错误的是()A.
火灾光警报器应设置在每个楼层的楼梯口、消防电梯前室、建筑内部拐角等处的明显部 位，宜与安全出口指示标志灯具设置在同一面墙上。
B.
每个报警区域内应均匀设置火灾警报器，其声压级不应小于
C.
在环境噪声 70dB 的场所，其声压级至少 85DB
D.
当火灾警报器采用壁挂方式安装时，其底边距地面高度应大于 2．2m
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举一反三
【单选题】What does the underlined sentence 'She is at a loss to explain it' mean?
A.
In her opinion it was a loss to the clothes shops where she stole things.
B.
She doesn't have any idea why she has the desire to steal from shops.
C.
She thinks it is a loss for her to explain why she stole things from shops.
D.
Personally she feels ashamed and embarrassed for her shoplifting actions.
【简答题】在下列各句的空白处填入一个适当的词，使句子意思完整，语法正确。 1. Jim doesn't take after his mother. Everyone says he is________to his father. 2. Mary is good at English. I think she can________the sentence into English for you. ...
【单选题】Read the article below about changes in working time. Choose the best sentence to fill in each of the gaps. For each gap 8—12, mark one letter (A—G) on your Answer Sheet. Do not use any letter more th...
A.
it is backed by gold or silver.
B.
in different places and at different times a variety of things have been used as money.
C.
See if you can locate a $ 5, $ 10, or $ 20 bill printed before 1964 and marked ' Federal Reserve Note' over the portrait.
D.
citizens could use gold as money or convert paper dollar to gold.
E.
therefore, the precious metals can be taken as money.
F.
Does it mean that your X-dollar bill is not X dollars?
G.
Much confusion exists about the real nature of money. (8)
【简答题】What does"it'" in the first sentence of Para. 5 refer to?
【简答题】最小数值检测电路。在4个无符号数中检测出最小的一个并输出,试使用函数编制Verilog程序。
【单选题】In the sentence 'What is its motive behind it?' （ Paragraph 5）， 'it' refers to __________. 查看材料
A.
the 'it' in the phrase 'the desire not to do it'.
B.
'the desire' in the phrase 'the desire not to do it'.
C.
the idea of Paragraph 5.
D.
the idea of helping the friend.
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