电台的发射距离与()有很大的关系。A、音量开大 B、发射单元 C、接收单元 D、天线馈线系

题型:多项选择题

问题:

电台的发射距离与()有很大的关系。

A、音量开大

B、发射单元

C、接收单元

D、天线馈线系统

考点:石油地震勘探工石油地震勘探工高级石油地震勘探工高级题库
题型:多项选择题

动词填空:阅读短文,用括号内所给动词的适当形式填空。

     Would you like 1______ (make) a snowman in winter, boys and girls? In Jinan, it 2______ (be) very

cold in winter. Our city looks beautiful under the snow and it is nice to play in snow.

     When I got up this morning, the land was all white with snow. There was too much snow. It was Sunday.

So we didn't go to school. After breakfast, some friends 3______ (come) to my house. We made a big

snowman. It had a big mouth and two ears. Its eyes 4______ (be) black and its nose was red. Someone put

an old hat on its head. I took a photo of our snowman. Then I put the photo on the wall of my bedroom.

    Look at the picture! The snowman 5______ (sit) happily.

题型:多项选择题

电造给矿输采用()

A.链式输送机

B.刮板皮带运输机

C.螺旋

题型:多项选择题

如果铁碳合金的基体是铁素体,那么渗碳体的量愈多,分布愈均匀,合金的强度和硬度就愈高。

题型:多项选择题

二尖瓣关闭不全的收缩期杂音()

A.递增递减型

B.递增型

C.一贯型

D.递减型

E.连续型

题型:多项选择题

下列关于群体性治安事件处置的原则,下列说法不准确的是()

A、公安机关统一指挥原则

B、防止矛盾激化原则

C、依法果断处置原则

D、慎用警力、强制措施和武器警械原则

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