提升警告信号应为()信号。A.声  B.光  C.声光  D.音响

题型:单项选择题

问题:

提升警告信号应为()信号。

A.声 

B.光 

C.声光 

D.音响

考点:煤矿安全生产知识竞赛煤矿基础知识考试煤矿基础知识考试题库
题型:单项选择题


It is all very well to blame traffic jams, the cost of petrol and the quick pace of modern life, but manners on the roads are becoming horrible. You might tolerate the rude and (21) driver, but nowadays the well-mannered motorist is the (22) to the rule. Perhaps the situation (23) a "Be Kind to Other Drivers" campaign, (24) , it may get completely out of hand.
Road politeness is not only good manners, but good (25) too. It takes the most cool-headed and good-tempered drivers to resist the temptation to revenge when (26) uncivilized behaviors.
On the other hand, a little politeness goes a long way towards (27) the tensions of motoring. A friendly nod or a wave of acknowledgement (28) an act of politeness helps to create an atmosphere of goodwill and tolerance so (29) in modern traffic conditions. But such acknowledgements of politeness are (30) rare today. Many drivers nowadays aren’t even able to recognize politeness when they see it.
However, improper politeness can also be (31) A typical example is the driver who waves a child across a crossing into the path of oncoming vehicles (32) may be unable to stop in time. The same (33) encouraging old ladies to cross the road wherever and (34) they care to. Years ago the experts warned us that the car-ownership explosion would demand a lot more give-and-take from all road users. It is high time that we (35) this message to heart.

A.calls in

B.calls up

C.calls on

D.calls for

题型:单项选择题

车削减速器箱体以()表面作为定位基准时,可使其全部或大部与角铁平面相接触,其接触面积不受限制。

A、待加工

B、加工

C、已加工

D、毛坯

题型:单项选择题

下列URL错误的是

A.html://abcom

B.http://abcom

C.ftp://abcom

D.gopher://abcom

题型:单项选择题

应急操舵通过直接启动舵机马达转动舵叶,控制地点一般在()

①驾驶台;

②舵机室;

③集控室;

④泵舱。

A.①、②;

B.①、②、③;

C.①、④;

D.②、③。

题型:单项选择题

水发的两种方法()

A、沸水发热水发

B、煮蒸

C、浸漂

D、焖泡

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