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【单选题】
听力原文：Woman: Giving me my money back isn't the point. My son needs to practice for an important match, but at the moment his table is lying in bits on the floor. When I bought it, I was assured that it would only take a matter of moments to screw the different parts in place, but the instructions don't make sense. Since I paid so much for it, I think it's only fair to ask for some hands-on help from you in getting it into a usable state. My son is impatient for a game on his new table! You overhear a woman talking about a table-tennis table in a sports shop. What does she want the shop assistant to do about her table-tennis table?A.
Provide her with a new one.
B.
Have it put together for her.
C.
Give her the money back.
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反馈参考答案：
举一反三
【单选题】硬件的所渭“即插即用"是指( )。
A.
可以将此硬件安放到任何1/0插槽中
B.
可以不安装此硬件的驱动程序就能使用
C.
操作系统可以自动识别此硬件,并自动安装相应的驱动程序
D.
操作系统可以自动识別此硬件,但需要手工安装相应的驱动程序
【简答题】现有100mL盐酸溶液，加入1mol/L的NaOH溶液500mL恰好中和．求溶液中盐酸的物质的量浓度各是多少？
【单选题】“在离心机中回转半径越大 分离因数越大”;“在旋风分离器中回转半径越大分离因数越大”。这两个说法() * prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
只有第一种说法对 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
B.
只有第二种说法对 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
两种说法都对 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
D.
两种说法都不对
【单选题】取500mL Na 2 CO 3 溶液与300mL 1mol/L盐酸反应，在不断搅拌下将碳酸钠溶液逐滴滴入盐酸中与将盐酸逐滴滴入碳酸钠溶液中，所产生气体的物质的量之比为3:2 。则碳酸钠溶液的物质的量浓度
A.
0.4mol/L
B.
0.3mol/L
C.
0.2mol/L
D.
0.5mol/L
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