GWl6／17型隔离开关动静触头的接触方式是（）。 A.点接触 B.线_爱下问搜题

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问题单项选择题

GWl6／17型隔离开关动静触头的接触方式是（）。

A.点接触

B.线接触

C.面接触

答案

参考答案：A

阅读理解

阅读下面材料，根据材料内容判断句子正误(正确用“T”表示，错误用“F”表示)。

    Here are some short messages. Emma got all of them on her mobile
phone yesterday.
    ● Hey, Emma, I'm going to have a party this weekend. Would you
come and join us? (From Susan 13823636790)
    ● Emma, Mr. Lee said your computer is OK now. You can go and get it from 10:00 a. m. to 6: 00 p. m. (From James 13654243666)

● Emma, call me, please. (From Vicky 13096752112)
● Emma, buy some fruits on your way home. Thanks. (From Jessie 13096758113)

( )1. These messages are on Emma's mobile phone.
( )2. Emma can get her computer at 8 :00 p.m.
( )3. Vicky asked Emma to call back.
( )4. If Emma wants to go to the party, she can call at 13823636790.
( )5. Jessie asked Emma to buy some fruits on her way to school.

问答题简答题

逆流型筒式磁选机有何特点。