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【单选题】
与十进制数87等值的二进制数是______。A.
1010101
B.
1010111
C.
1010001
D.
1000111
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反馈参考答案：
举一反三
【单选题】What will the woman do?
A.
She will continue asking the man abont the machine.
B.
She will ask the manager there.
C.
She will invite the manager to he,'home.
【单选题】With the equipment in the video you watched, how do you turn the machine on so it can test the blood glucose?
A.
You tap the touch screen on the machine.
B.
You insert the test strip into the machine, and the machine will turn on.
C.
You don't need to turn on the machine. It will always be on.
D.
None of the above.
【简答题】地下水类型区有哪些分类？
【单选题】听力原文：What else should the man do when the machine works? (16)
A.
Shut the door.
B.
Put in the soap powder.
C.
Pay money.
D.
None of the above.
【单选题】What are customers told to do?
A.
Read the warranty carefully
B.
Clean the machine with gentle chemicals
C.
Refrain from closing the machine by hand
D.
Dry the machine after cleaning
【单选题】MCS-51系列单片机的定时器T1用作计数方式时的计数脉冲是( )。
A.
外部计数脉冲由T1(P3.5)输入
B.
外部计数脉冲由内部时钟频率提供
C.
外部计数脉冲由T0(P3.4)输入
D.
由晶振提供
【单选题】the great noise produced by the machine will sooner or later do()to the workers’ hearing.
A.
damage
B.
help
C.
wrong
D.
harm
【简答题】一定条件下，将SO 2 和O 2 充入一个体积为2L的密闭容器中，发生如下反应：2SO 2 (g)+O 2 (g) 2SO 3 (g)，反应过程中SO 2 、O 2 、SO 3 物质的量变化如图所示。 回答下列问题： (1)0～15min内SO 2 的平均反应速率为__________。 (2)当降低温度时，SO 2 的转化率增大，则该反应正反应为_________（填“吸热”或“放热”）反应。 ...
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