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【单选题】
年照射的有效剂量<15mSv(1.5rem)。但大于5mSv(0.5rem),该工作条件属于__。
A.
甲种工作条件
B.
工作条件
C.
丙种工作条件
D.
工作条件
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举一反三
【单选题】合力、重力、阻力分别是从力的 ( ) 定义的
A.
性质、效果、分析
B.
分析、性质、效果
C.
效果、分析、性质
D.
性质、分析、效果
【单选题】M: I have a card for Jack. Would you like to write something on it? W: Yes, of course. What should I write? M: Just say we miss him very much. We hope he’Il be well soon and we are looking forward to ...
A.
He works very well.
B.
He has been abroad for a long time.
C.
He often sends cards to his friends.
D.
He might be ill in hospital.
【判断题】带轮孔和轴的连接,一般采用间隙配合。
A.
正确
B.
错误
【单选题】革兰阳性菌、阴性菌细胞壁共有的成分是?
A.
、脂蛋白
B.
、磷壁酸
C.
、核酸
D.
、脂多糖
E.
、肽聚糖
【单选题】M: I have a card for Jack. Would you like to write something on it? W. Yes. of course. What should I write? M: Just say we miss him very much. We hope he’ll be well soon and we are looking forward to ...
A.
He works very well
B.
He has been abroad for a long time
C.
He often sends cards to his friends
D.
He might be ill in hospital
【单选题】What (2)______ we use to write something down on paper?
A.
do
B.
did
C.
does
【单选题】I have been asked to write something for a textbook that is meant to teach college students something about writing and revision. I am happy to do this because I believe in revision. I have also been ...
A.
directional process
B.
informative process
【简答题】对 YGGL 数据库完成多表查询: 1 、查询每个雇员的基本情况和薪水情况 2 、查询 “ 王林 ” 的基本情况和所工作的部门名称 3 、查询月收入在 2000~3000 元的员工姓名和支出 4 、查询研发部在 1970 年以前出生的员工姓名和薪水情况 5 、使用子查询查找工资收入大于 2000 元的员工的基本信息 6 、查找在财务部工作的员工的基本信息 7 、查找住在“中山路”的员工的工作部门名...
【单选题】Usually if you want to write something on your computer, you must use the __________ to type into it.
A.
mouse
B.
monitor
C.
speaker
D.
keyboard
【单选题】采用( )时,应特别注意掌握定时点。
A.
接续法
B.
数字法
C.
选择法
D.
图示法
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