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【判断题】
打开一个读写的文件,如果文件存在会被覆盖A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】如果y=-x+2，当x______时，y≤0．
【简答题】当x______时，分式 x-3 x 2 的值＞0．
【单选题】—What are you doing for your vacation? —________________________.
A.
I’m going hiking.
B.
I went to the beach.
C.
I often go to the mountain.
D.
I like going bike riding.
【单选题】假如你是一名芯片销售员,客户对购买的芯片有如下要求:1.M3内核处理器,2.低功耗,3.容量为K,你会推荐哪款芯片()。
A.
STM32L105RF
B.
STM32F103R8
C.
STM32L103R8
D.
STM32W407C4
【简答题】当x=______时，分式 x+2 x-2 的值为0．
【单选题】— What are you doing _____vacation? — I' m going hiking. [ ]
A.
to
B.
for
C.
at
D.
about
【单选题】听力原文：W: What are you going to do over winter vocation? M: I had planned on going hiking in a National Park, but I'll just stay here and focus on my reading and write a research paper. Q: What will the...
A.
He will go hiking.
B.
He will plan his holiday.
C.
He won't go away.
D.
He will go to a National Park.
【简答题】在机房中，每台电梯应单独装设电源开关，并有易于识别的标志，该开关位置应能从机房入口处方便迅速地接近。如几台电梯共用一机房，各台电梯的主电源开关应有易于识别的标志。对此项规定你如何进行检验？
【简答题】当x=______时，（35-5x）×4=0．
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