60钴治疗机照射野内有用射线空气比释动能率不对称性应小于（）
| Violin prodigies, I learned, have come
in distinct waves from distinct regions. Most of the great performers in the
late 19th and early 20th centuries were born and brought up in Russia and
Eastern Europe, I asked Isaac Stern, one of the world’s greatest violinists the
reason for this phenomenon. "It is very clear," he told me, "They were all Jews
(犹太人) and Jews at the time were severely oppressed and ill-treated in that part
of the world. They were not allowed into the professional fields, but they were
allowed to achieve excellence on a concert stage." As a result, every Jewish
parent’s dream was to have a child in the music school because it was a passport
to the West. Another element in the emergence of prodigies, I found, is a society that values excellence in a certain field to nurture (培育) talent. Nowadays, the most nurturi A. A natural gift. B. Extensive knowledge of music. C. Very early training. D. A prejudice-free society. [单选题]客伤责任划分中，员工在公共区域使用设备设施时，未留意到乘客，导致乘客受伤的属于（）客伤。
A.有责客伤Ⅰ类 B.有责客伤Ⅱ类 C.无责客伤Ⅰ类 D.无责客伤Ⅱ类 [判断题]装设于配电变压器低压母线处的反孤岛装置与低压总开关、母线联络开关间应具备操作闭锁功能。
A.正确 B.错误 [单选题]（ ）思维障碍对解决老问题并没有什么影响。
A.直线型 B.习惯型 C.权威型 D.自我中心型 [判断题]解钩车辆一旦分离，钩锁不能立即回到准备连挂位置，需要手动操作。
A.正确 B.错误 [判断题]换装线按线路分类属于货物线。
A.正确 B.错误 [单选题]司法机关依照本法获得的客户身份资料和交易信息，只能用于反洗钱（）。
A.刑事诉讼 B.行政诉讼 C. 民事诉讼 [单项选择]下列哪项不是钙通道阻滞药的适应证（）
A. 高血压 B. 心绞痛 C. 心律失常 D. 水钠潴留 E. 雷诺综合征 [单选题]高压水银灯泡主要由( )组成。
A.发光管.外玻壳.辅助电极 B.灯管.灯丝.镇流器.启辉器 C.外玻壳.灯丝 D.外玻壳.灯丝.碘 [填空题]在Windows 98的长文件名目录链中，每一个22字节的长名组件都包含有序列号、标志属性、类型值和校验和，其余的26个字节可存储文件名的______ 个字符(长文件名均采用Unicode编码)。
[判断题]将一个100W的白炽灯分别接到220V交流电源或220V直流电源上，灯泡亮度一样亮。（ ）
A.正确 B.错误 我来回答: 提交
|
