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【简答题】
Be serious about safety at school March 29 is National School Safety Day.This year students will learn how to stop school accidents from happening. We should all be serious about school safety.A report in China Education Daily says that school accidents kill more students below age 14 than anything else.Abut 16 000 die in school accidents every year.That means that on average(平均)40 students die at school every day in China! The worst accidents come from food poisoning(中毒) fires electricity and traffic. Students at Beijing's Yucai School have safety lesson and watch videos act in short plays and make their own newspapers to learn about safety. During a fire drill at the school last week more than 2 000 students safely left the building in less than 3 minutes! “We learned to keep in order and not to hurry if we ever have a real life ”said Li Xin a Junior 2 girl. Yu Yue a Junior 2 student in Shanghai says “Steps get very wet after they're washed every day.It's easy for us to fall especially if we start pushing each other.” So how safe is your school? Talk to your teachers about it!
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举一反三
【单选题】火焰高而稳定,呈黄白色,光度明亮,热气逼人的火力是()
A.
旺火
B.
中火
C.
小火
D.
微火
【单选题】下列哪种局部麻醉药物不宜作浸润麻醉或传导麻醉
A.
盐酸普鲁卡因
B.
盐酸丁卡因
C.
盐酸利多卡因
D.
昔罗卡因
【单选题】旺火火焰高而稳定,光度明亮,热气逼人,火焰呈
A.
红色
B.
白色
C.
红黄色
D.
白黄色
【多选题】关于支原体肺炎,以下哪几种说法是正确的是()
A.
临床症状多数较轻,但影像表现可以较重
B.
血冷凝集试验对本病有诊断价值
C.
病变主要表现为肺泡实变,不引起间质炎症
D.
影像表现与浸润型肺结核相似,但动态变化较快,一般1~2周可基本吸收
E.
X线表现为中下肺野云絮状、磨玻璃状斑片影,边界不清
【单选题】药物常用量的剂量范围是指
A.
最小有效量与极量之间
B.
最小有效量与最小中毒量之间
C.
比最小有效量大些,比极量小些
D.
不超过极量
E.
比最小有效量大些,比最小中毒量小些
【单选题】药物常用量的剂量范围是指
A.
最小有效量与极量之间
B.
最小有效量与最小中毒量之间
C.
比最小有效量大些,比极量小些
D.
比最小有效量大些,比最小中毒量小些
E.
不超过极量
【简答题】无机胶凝材料按硬化条件分 和 。
【单选题】下列哪种局部麻醉药物不宜作浸润麻醉或传导麻醉是( )。
A.
盐酸普鲁卡因
B.
盐酸丁卡因
C.
盐酸利多卡因
D.
昔罗卡因
【单选题】火焰高而稳定,呈黄白色,光度明亮,热辐射强烈,热气逼人的是( )。
A.
微火
B.
小火
C.
中火
D.
旺火
【单选题】第三方电子商务模式的实质是
A.
依托第三方电子商务平台开展电子商务
B.
作为中介开展电子商务
C.
第三方平台免费为商家提供经销存服务
D.
第 三方公司提供软硬件服务
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