电梯在向上运行中,扳动基站消防开关,电梯应()。A、就近换速停下车返回基站 B、急停

题型:单项选择题

问题:

电梯在向上运行中,扳动基站消防开关,电梯应()。

A、就近换速停下车返回基站

B、急停车

C、就近换速停车待命

D、没反应

考点:电梯操作证考试电梯操作证考试题库
题型:单项选择题
用方框中所给的词的适当形式填空,使短文正确、通顺每词限用一次。
run     how     small     large    get      become       northeast       climb       forest        difference
 

       There are many kinds of tigers all over the world, and the 1____________
tiger is Northeast Tiger. Most Northeast Tigers live in the 2_____________ of
China, like Heilongjiang Province and Jilin Province. Because there are many
3_____________ and mountains, the tigers usually like living there. In the forests
 and mountains, there are fewer people 4____________ out and coming in. So the
tigers are very free. They can 5___________ after each other, catch and eat some

6____________ animals, like rabbits and deer. 
         The Northeast Tigers are 7____________ from the ordinary tigers. For example, the Northeast Tigers
can swim very well, but can't 8__________ the trees. The Northeast Tigers' hearing is the best, and no matter
9___________ low the sound is, they can hear it.
         As the number of the tigers 10____________ smaller and smaller, we should protect the tigers as well as
we can from now on.
题型:单项选择题

委托人在委托监理合同的实施过程中,承担的义务包括()。

A.在更换委托人常驻工地代表时提前通知监理人

B.在合理时间内就监理人书面提交的要求作出书面决定

C.为监理人驻工地监理机构开展正常工作提供协助服务

D.负责合同的协调管理工作

E.对工程设计变更进行审批

题型:单项选择题

属于核酸一级结构的描述是

A.DNA双螺旋结构
B.DNA的核小体结构
C.DNA的超螺旋结构
D.tRNA的三叶草结构
E.核苷酸在核酸长链上的排列顺序

题型:单项选择题

下图为某家族甲、乙两种遗传病的系谱图。甲遗传病由一对等位基因(A、a)控制,乙遗传病由另一对等位基因(B、b)控制,这两对等位基因独立遗传。已知Ⅲ-4携带甲遗传病的致病基因,但不携带乙遗传病的致病基因。

若Ⅳ-1与一个正常男性结婚,则他们生一个患乙遗传病男孩的概率是()

题型:单项选择题

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