热门试题:
[不定项选择题]似蚓蛔线虫卵
A.椭圆形,个体大,壳薄而均匀,有盖,内含卵细胞及卵黄细胞
B.灯泡形,个体很小,有盖,内含毛蚴
C.卵圆形,无盖,一侧有小棘,内含毛蚴
D.椭圆形,壳厚而均匀,壳外有凹凸不平的蛋白质膜,内含卵细胞
E.圆球形,外有较厚具放射状条纹的胚膜,内含六钩蚴
[单选题]检修工作结束以前,对设备进行
加压试验后,工作班若需继续工
作时,应(____)。
A.重新履行工作许可手续
B.办理新的工作票
C.重新布置安全措施
D.重新对工作班组成员交待安全措施
[单项选择]因患者使用不当,临床戴牙半年后金-铂合金烧瓷桥位于近中切角处崩瓷,由于患者急需出差,只能进行瓷面粘接修复,其瓷断面应采用哪种材料处理()
A. 盐酸
B. 氢氟酸
C. 硫酸
D. 磷酸
E. 硝酸
[单项选择]满足最终消费者的需求是零售商的()。
A. 必要途径
B. 最终目标
C. 主要目的
D. 次要目的
[判断题]烷基化反应中的搅拌可以根据情况停止或中断,不会有危险。
[单选题]以求知作为目标本身,指向学习任务的动机,也就是想理解知识、解决问题的欲望是( )
A.附属内驱力
B.认知内驱力
C.自我提高内驱力
D.交往内驱力
[单选题]用实测法测定线路的零序参数,假设试验时无零序干扰电压,电流表读数为20A。电压表读数为20V,瓦特表读数为137W,零序阻抗的计算值为( )。
A.0.34+j0.94Ω
B.1.03+j2.82Ω
C.2.06+j5.64Ω
[单项选择]根据我国对外贸易法的有关规定,对外贸易救济措施不包括( )。
A. 对外贸易调查
B. 反倾销
C. 反补贴
D. 保障措施
[简答题]Read the following paragraph carefully and choose the best topic sentence from the four possible answers that follow the paragraph by writing A, B, C or D.
Topic Sentence.______
A few years ago, letter writing was the most important means of communication and people seldom made phone calls, especially in the rural areas, because there were not many telephones available. With the rapid development of China’ s economy, telecommunication service is badly needed. For example, when many young Chinese go abroad to work or to study, they want to get in touch with their folks regularly and easily. Private companies have mushroomed all over China; businessmen realize the importance of telephone. In the countryside, letters usually take several days or weeks, and much time will be wasted, so people have dreamed for many years to have telephone service. Since many families are getting rich, they can afford it now.
A. Nowadays, more and more people rely heavily on the telephone inst
[多选题]分水器、水枪阵地应当设置在( )且相对安全的位置。
A.便于观察
B.便于进攻
C.便于转移
D.便于撤离
[简答题]苏联解体后,俄罗斯的外交政策出现了哪些变化?
[判断题]如果内部数据很翔实,使用高级计量法的操作风险计量系统可以不必利用相关的外部数据。 ( )
[单项选择]跨越不停电线路时,施工人员严禁从()架上通过。
A. 封顶
B. 防护
C. 跨越
[单项选择]有疏肝理气功效的解表药是()
A. 蝉蜕
B. 牛蒡子
C. 薄荷
D. 葛根
E. 菊花
[单项选择]
{{B}}Questions 29 to 31 are based on the passage you
have just heard.{{/B}} |
A. According to the amount of college expenses they will pay.
B. According to their records in high schools.
C. According to the requirement of ages in respective states.
D. According to the scholarships the students receive.
[单选题]电缆试验结束,应对被试电缆进行充分放电,并在被试电缆上加装临时接地线,待()方可拆除。
A.投入运行后
B.工作票终结前
C.电缆终端引出线接通后
D.带负荷后
[单选题]实施人工呼吸模拟操作时,先把模拟人放平,头往后仰( ),形成气道放开,正确人工吹气2次。2
A.5°~10°
B.10°~20°
C.30°~50°
D.70°~90°
[判断题]泡沫灭火器可用于带电灭火。
A.正确
B.错误
[多选题]下列属于公众聚集场所的是()。
A.商场.市场
B.医院
C.公共图书馆
D.宾馆.饭店
E.员工集体宿舍
[判断题]运行人员对二次压板的投退操作应根据配网调控值班员命令执行。
A.正确
B.错误
[单项选择]患者腰痛酸软,喜按,劳则由甚,手足不温,少气乏力,舌淡,脉沉细,治宜()
A. 活血化瘀
B. 散寒除湿
C. 养精填髓
D. 温补肾阳
E. 补肾壮腰
[单项选择]生物反馈治疗适用于:()
A. 抑郁症
B. 神经症
C. 精神分裂症
D. 躁狂症
E. 精神发育不全
[单选题]引导信号开放后车未接近,轨道电路故障突然自动恢复,该区段的道岔()解锁
A.能
B.不能
C.可能
D.有1组解锁
[单选题]由外国的传教士参加编撰,系统地介绍了欧洲的天文学著作,吸收了欧洲历法的成果的著作是____(出题单位:山东科技报社推荐单位:山东学习平台)
A. 《大统历》
B. 《崇祯历书》
C. 《大明历》
D. 《太初历》
[多选题]
属于快反应的心肌细胞有
A.心房肌
B.窦房结
C.心室肌
D.房室结
E.浦肯野纤维
[多选题]19世纪末,法国在中国划分的势力范围有( )
A.云南
B.福建
C.广东
D.广西
[单选题]一般阀门的润滑部位应( )加油一次。
A.一周至一月
B.一月至三月
C.二月至五月
D.半年至一年
[单项选择]回送的检修车须附有(),并在回送单上注明准许回送的命令号。
A. 车统一23
B. 车统一24
C. 车统一26
D. 车统一36
[填空题]根据战略目标所提出的六项战略措施是大力推进科技创新、实施人才强业战略、()、建立健全法规与标准体系、加强国际合作能力和拓展国际活动空间、创新体制和机制.
[单项选择]系统性红斑狼疮的眼部表现主要在()
A. 结膜
B. 角膜
C. 虹膜
D. 晶状体
E. 视网膜
[单项选择]下列哪项是互联网在交通这方面可以实现()。
A. 手机具有定位功能
B. 使用滴滴打车提供专车服务,便于顾客出行
C. 可以满足顾客的消费需求
D. 减少交通事故的发生
[判断题]静电现象电量不大,但电压不高,不易发生放电和静电火花。
A.正确
B.错误
[单选题]下列哪项不是丝线的优点?
A.组织反应小
B.吸收性较强
C.维持张力强度持久
D.易于灭菌
E.结扎时不易松脱
[单项选择]
Most forest fires are caused by human carelessness, negligence, or ignorance. Forest fire prevention, therefore, is mainly a problem of creating a better understanding of the importance of forests, an awareness of the danger of fire in the woods, and a sense of personal responsibility to safeguard the forests from danger. This is not an easy job. A city dweller, used to paved streets, does not easily change his smoking habits when he goes into the woods.
Careless smokers are responsible for thousands of forest fires each year. Many of these are started when cigarette butts and matches are thrown from automobiles. Others are caused by hunters, hikers, fishermen, or woods workers who are careless in disposing of their smoking materials. The Forest Service has posted rules in many of the National Forests that prohibit smoking except in certain designated areas. Many of the states have laws against throwing lighted materials from automobiles. The prevention of smoker-caused f
A. smoking in forests
B. the chief causes of forest fires and their prevention
C. changing the attitudes and behavior of millions of people
D. advances in knowledge of fire weather
[单选题]红外热像检测待测设备要求中电流致热型设备最好在高峰负荷下进行检测;否则,一般应在不低于(____)%的额定负荷下进行。
A.20
B.30
C.40
D.50
[判断题]现场开始操作前,应先在模拟图(或微机防误装置、微机监控装置)上进行核对性模拟预演,无误后,再进行操作。
A.正确
B.错误
[判断题]进行水阻试验或机车带负荷运行时,禁止进入高压室作业。( )P61T278
A.正确
B.错误