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【单选题】
焊补燃油或滑油管子必须A.
关紧相临近的一只阀门，放尽存油清洁后焊补
B.
切断燃油或滑油供应，清洁破口，用水冲洗后才能焊补
C.
必须把管子拆下，清洁除油后在专用修理间焊补
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举一反三
【简答题】计算机网络按照其传播方式的不同，我们可以将之分为 和”点-点网络“A. 广播网络
【简答题】数码管的显示方式有静态和 两种。
【单选题】The one thing we need to be alert about the Internet is ____________.
A.
to live our real life with a virtual identity
B.
not to let the virtual life online dominate our real life
C.
to accept whatever information coming to us
D.
to stop using it since it is doing harm to us
【单选题】Analysts commonly describe two distinct modes of communication in the Internet of Things: One is thing-to-person communication, and the other is_______.
A.
person-to-person communication
B.
person-to-thing communication
C.
thing-to-thing communication
D.
client-and-service communication
【单选题】下列关于梁配筋说法错误的是( )
A.
梁下部纵筋注写为6Φ25 2／4，则表示上一排纵筋为4Φ25，下一排纵筋为2Φ25，全部伸入支座。
B.
下部纵筋注写为6Φ25 2(-2)／4，表示上一排纵筋为2Φ25，且不伸入支座；下一排纵筋为4Φ25，全部伸人支座。
C.
"3Φ22；4Φ20"表示梁的上部配置3Φ22的通长筋；梁的下部配置4Φ20的通长筋。
D.
梁上部钢筋注写.2Φ22+2Φ25，表示2Φ22放在梁角部，2Φ25放在梁中间。
【单选题】The thing the author like best about the Internet is that ______.
A.
he is able to explain his ideas in a simple language
B.
his writing is not changed by his boss
C.
he is able to communicate with people all over the world
D.
a lot of people have left entries and thanked him for his efforts
【简答题】LED 数码管有 显示和 显示两种方式。
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