其元素符号为X,则有6个中子、7个质子的原子核,可表示为()。 A.67X B.61

题型:单项选择题

问题:

其元素符号为X,则有6个中子、7个质子的原子核,可表示为()。

A.67X

B.613X

C.136X

D.713X

E.76X

考点:北京住院医师医学影像Ⅰ阶段北京住院医师医学影像(综合练习)北京住院医师医学影像(综合练习)题库
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特殊物品包括微生物、人体组织、器官、血液及其制品,生物制品和国务院卫生行政部门指定的其它须特别审批的物品( )

题型:单项选择题

The Beets were a new couple (夫妇). The things in their rooms, such as the television, the computer, the fridge, furniture and so on, were all left by their parents. They only paid some money for their food and clothes. But they tried their best to save money. If they had something important to tell their friends, they always visited them instead of calling them.

One day, it was a quarter past nine. Mr. Beet didn’t come back. His wife was a little worried. The supper was cold and she had waited for two hours. She was sitting by the table in the dark room.

Suddenly the woman heard someone coming upstairs. It was her husband’s step. She hurried to open the door. In the dark she could hear his deep breathing(呼吸). As soon as he sat down, she turned on the light and found he looked very tired.

“Why do you come back so late, dear?” asked the woman. “Haven’t you caught a bus?”

“Yes, but I didn’t take it.” “Why not?”

“I ran after it so that I saved two dollars this evening.”

“That’s great!” the woman said happily. “Run after a taxi next time and you’ll save both more time and money.”

小题1:The supper was ready at       .

A.6:15

B.6:30

C.6:45

D.7:15小题2:Mrs. Beet sat in the dark because         .

A.she wanted to save money.

B.she didn’t like the bright light.

C.she was afraid to be seen.

D.she wanted to have a good rest.小题3:Mr. Beet went back          .

A.by taxi

B.by bus

C.on foot

D.by bike小题4:When Mr. Beet got home that evening,               .

A.his wife was angry with him

B.he was very tired

C.he was too hungry to say a word

D.his wife felt sorry小题5:Mrs. Beet hoped          .

A.her husband went home by bus the next time.

B.her husband could keep on doing exercise.

C.her husband could be stronger and stronger.

D.her husband could save more money and time.

题型:单项选择题

辽宁宽甸县农民给毛 * * 的一封信中说:“我们祖祖辈辈做梦都在想着有一天自己能有三亩、五亩的地,┅┅现在这个梦想实现了。”这封信内容反映的历史背景是[ ]

A.全国农业合作化高潮

B.土地改革运动

C.“大跃进”运动

D.改革开放新时期

题型:单项选择题

治疗流行性脑脊髓膜炎首选药是()。

A.磺胺嘧啶

B.替硝唑

C.磺胺多辛

D.磺胺甲噁唑

E.磺胺二甲嘧啶

题型:单项选择题

轻度哮喘发作时下述检测结果可能有误的是

A.Pa02降低
B.PaCOz降低
C.pH降低
D.Sa02正常
E.PaC02升高

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