()指的是同位素。A、质量数相同,中子数不同的元素B、质量数不同,中子数相同的元素C

题型:单项选择题

问题:

()指的是同位素。

A、质量数相同,中子数不同的元素

B、质量数不同,中子数相同的元素

C、质子数相同,中子数不同的元素

D、中子数相同,质子数不同的元素

考点:无损探伤工无损探伤工(中级)无损探伤工(中级)题库
题型:单项选择题

Leopards ( 豹 ) live in many parts of the world , from Siberia to Africa .They have a very beautiful yellow skin with large black spots. They live for about 15 years and eat small mammals (哺乳动物) such as zebras, monkeys, and antelopes ( 羚羊) .They sleep for about 12 hours a day . Leopards are very solitary(独居的)animals. They spend most of their time alone in trees , where they wait until a small animal passes . they jump on the animal and then drag it up into the tree, where they eat it.

Like many animals ,leopards are disappearing because people hunt them. They kill them for their beautiful coats. The Sinai leopard , for example , from Egypt, is now probably extinct(绝种的).

小题1: How long does a leopard usually live?

A.Fifty weeks

B.Fifteen months

C.Twelve days

D.Fifteen years小题2:Leopards_______________ .

A.live in family groups

B.live alone

C.live together

D.live with other animals小题3: Leopards spend much time in tree because they want to_____________ .

A.sleep

B.jump

C.wait and catch small mammals

D.rest小题4:Which is not true ?

A.Leopards have beautiful fur

B.Leopards eat animals and plants

C.Leopards sleep 12 hours a day

D.The Sinai leopard probably extinct小题5:Why do people hunt leopards ? Because          .

A.they kill them for their meat

B.they attack people all the time

C.they are dangerous

D.they kill them for their coats

题型:单项选择题

下列句子中,加点的熟语使用恰当的一句是

A.日本首相小泉不顾中国人民和亚洲其它国家人民的反对,三番五次参拜靖国神社,真是一个口惠而实不至的家伙。

B.在成熟的市场经济下,做生意应讲诚信,像那种“人凭一张嘴,货卖一张皮”的靠蒙骗顾客来赚钱的做法是愚蠢的。

C.政府十分关心农民工的合法权益,《劳动合同法》的正式实施,对那些拖欠农民工工资的企业主来说又多了道紧箍咒。

D.进入高三之后,爸爸监督我的学习,妈妈负责我的后勤保障,他们一个唱红脸,一个唱白脸,各司其职又互相配合。

题型:单项选择题

下图是某地区1950~1980年人口增长图。读图回答小题。

小题1:30年间该地区:        (   )

A.乡村人口增长了2000万人

B.城市人口增长了500万人

C.总人口增长了两倍

D.乡村人口增长了两倍小题2:30年间该地区城市化水平 (   )

A.大幅提高

B.略有提高

C.没有变化

D.略有下降

题型:单项选择题

诊断为卵巢肿瘤破裂的处理原则是

A.急症剖腹探查

B.抗炎治疗观察

C.积极抗生素治疗

D.抗炎后手术治疗

E.急症腹腔镜检查

题型:单项选择题

在国家层面建立推动军民融合发展的()机制。

A、统一领导

B、军地协调

C、需求对接

D、资源共享

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