热门试题:
[判断题]操作井下高压电气设备主回路时,操作人员必须戴好绝缘手套再开始操作。 ( )
A.正确
B.错误
[单选题]安全监控系统甲烷电闭锁、风电闭锁功能每()天至少测试1次。
A.15
B.7
C.10
[单选题] SQL数据[ ]语言用于安全管理。
A.查询
B.操纵
C.定义
D.控制
[单选题]【单选题】 雷暴在积云阶段所具有的特征( )。
A.云中充满上升气流
B.频繁的闪电
C. 升降气流并存
[单选题]男性,50岁,感冒后尿少,纳差,恶心1周,查体血压170/110mmHg,血红蛋白65g/L,BUN 22mmol/L,血肌酐780μmol/L,为明确诊断,因尽快行下列哪项检查
A.肾穿刺活检
B.双肾ECT
C.肾脏B超
D.24小时尿蛋白定量
E.静脉肾盂造影
[多选题]接地极线路包括以下状态(____)
A.检修
B.冷备用
C.热备用
D.运行
[多选题]变压器短路试验目的是( )。
A.测定阻抗电压
B.负载损耗
C.计算短路参数
D.确定绕组损耗
[填空题]信号电源屏的输入电源采用( )供电方式。
[单选题]胚胎着床是指胚泡植入( )的过程。
A.输卵管壶腹部
B.卵巢
C.子宫内膜
D.输卵管伞部
[多选题]要提高蒸汽品质应从提高()着手
A.补给水品质
B.凝结水品质
C.循环水品质
D.工业水 品质
[单项选择]
下列预防化学中毒做法正确的是()
①用于化学实验的化学试剂无论是否有毒,一律不能入口
②应使用干净的药匙取用试剂,原则上一支药匙只能取用一种药剂,但为了节约材料也可以考虑取用两种试剂
③开启易挥发液体的瓶塞时,瓶口不能对着眼睛
④实验前后及实验过程中,手不能直接接触药品
A. ③④
B. ①②
C. ①③④
D. ②③④
[填空题]监控记录插件正常工作时各指示灯含义:2A亮:()
[单选题]正常情况,成人血压为:
A.舒张压 60 – 90 mmHg;收缩压 90 – 140 mmHg
B.舒张压 60 – 95 mmHg;收缩压 90 – 160 mmHg
C. 舒张压 60 – 90 mmHg;收缩压 90 – 160 mmHg
D. 舒张压 60 – 95 mmHg;收缩压 90 – 140 mmHg
[单选题]事业部牵头业务部室依据事业部《安全生产标准化停工停产标准》,每季度至少完成()起本系统范围内标准化停工停产指标。
A.A、1
B.B、2
C.C、3
D.D、5
[简答题]As evidence that the Earth's atmosphere is warming continues to accumulate, scientists are making slow progress toward an answer to the big question raised by the evidence: How much of the warming is due to human activity and how much to natural causes
[判断题]()第三阶段机器人将具有识别、推理、规划和学习等智能机制,它可以把感知和行动智能化结合起来,称为智能机器人。
A.正确
B.错误
[单选题]如果将手持对讲机携带在身体上,发射时,天线距离人体至少( )
A.2.5厘米
B.3.5厘米
C.4.5厘米
D.5.5厘米
[判断题]张某生产、销售假药,没有对人体健康造成严重危害。张某的行为构成生产、销售伪劣产品罪。
A.正确
B.错误
[判断题]利用电容器的无功功率来补偿电感性负载 上无功功率,达到提高系统中功率因数的目的( )
A.正确
B.错误
[单项选择]It is true that ______.
A. an educated person would be expected to know most technical terms
B. everyone is interested in scientific findings
C. the average man often uses in his own vocabulary what was once technical language not meant for him
D. various professions and occupations often interchange their dialects and j argons
[判断题]计算机系统时钟准确,网络系统各节点时钟应统一。
A.正确
B.错误
[单选题]关井条件下天然气在井内上升过程中,气体体积会( )。
A.升高;
B.不变;
C.降低;
D.无法确定。
[单选题]多台机械配合作业时,应明确作业负责人与安全负责人之间,机械与机械之间的联系方式,并由( )负责现场指挥。
A.安全员
B.作业负责人
C.质量监督员
D.车间主任
[判断题]没有政党领导的阶级,不能形成统一的意志和行动。
A.正确
B.错误
[单项选择]用于选拔性和竞赛性活动的评价属于()
A. 相对评价
B. 绝对评价
C. 个体内差异评价
D. 形成性评价
[单项选择]New research from Australia supports the belief that many pet owners have—it shows that pets are good for your health. The
1
of this new study suggest that people who have pets are
2
less risk from heart disease than
3
who do not.
Ironically this
4
study on pets was intended to
5
the myth that pets are good for your health. Earlier research
6
the benefits of owning pets received a lot of
7
, but the results were not good enough to
8
the more skeptical doctors. The new research was carried
9
over three years and examined 6000 people, the largest group yet involved in
10
a study. They took tests that measured a
11
of different factors known to be
12
in heart disease—
13
and blood levels of cholesterol (胆固醇) and triglyceride (甘油三酸酯).
14
, people were asked about their lifestyles.
The 800 people who owned pets had
15
levels on each of the factors
16
than those who did not own pets. The differences were even greater than those found in similar studies on people who
17
to vegetarian diets or took
18
exercise. The study also showed that it did not matter
19
kind of pet was owned—a cat was as good as a dog—so the benefits could not be attributed
20
the exercise involved in walking a dog.
A. in
B. out
C. up
D. over
[单选题]事故后的()小时内,应以书面形式将初步调查分析情况上报。
A.24
B.36
C.48
D.72
[多选题]开展一级动火作业时,动火工作票一般一式三份,分别由()收执动火工作票。
A.工作负责人
B.动火执行人
C.安监部门(或具有消防管理职责的部门)
D.动火部门
[单选题]电能能效账单生成与推送。()利用客户电量、电费、负荷等数据,分析峰平谷电量、平均电价、电费构成等内容,每月自动生成电能能效账单并推送至客户。
A.A、绿色国网;
B.网上国网;
C.省级平台;
D.i国网
[单选题]DES算法属于加密技术中的( )。
A.对称加密
B.不对称加密
C.不可逆加密
D.以上都是
[判断题]在火灾事故死亡人员中,大多数是被烟雾窒息而死的。()
A.正确
B.错误
[判断题]施工机具应不定期按标准试验。
A.正确
B.错误
[判断题]播煤风过大会使煤抛撒太远,提高着火效率。( )
A.正确
B.错误
[单项选择]患者,男,30岁。水肿,汗出恶风,身重,小便不利,舌淡苔白,脉浮。治疗应首选()
A. 十枣汤
B. 舟车丸
C. 五苓散
D. 防己黄芪汤
E. 猪苓汤