制定住宅小气候标准应以何季度为主() A.冬春季 B.春秋季 C.冬夏季 D.夏秋季

题型:单项选择题

问题:

制定住宅小气候标准应以何季度为主()

A.冬春季

B.春秋季

C.冬夏季

D.夏秋季

E.秋冬季

考点:职业卫生(医学高级)环境卫生环境卫生题库
题型:单项选择题

阅读理解。

     Young children don't have the skills or knowledge to stay safe in heavy traffic. The following tips (忠告)

will be helpful for you to keep your children safe in heavy traffic. Children learn about road safety by watching

others. Make sure that you always set good examples. Your children will follow you and think it's OK to do

like you. Teach your children to pay attention to traffic lights when you cross the road together with them.

This helps them understand when it's safe to cross. Make sure that you walk between your children and

traffic, and hold their hands all the time.

     When your children are a little older, you can start to tell them the importance of traffic knowledge. Let

them start to understand the reasons why they need to be so careful. Talk with them about road signs and

traffic rules.

     Ask your children to play in a safe place. Never let them ride bikes on the road without an adult present

at rush hour.

     The most important thing you can do to keep your children from getting hurt is to encourage them to

follow traffic rules. After knowing about traffic rules, they'll volunteer to obey them. In this way, they'll be

careful enough to keep themselves away from danger.

1. Do young children know how to stay safe in heavy traffic?

    _____________________________________________________ 

2. Who should set good examples to young children on roads?

    _____________________________________________________

3. When do young children never ride their bikes alone on the road?

    _____________________________________________________

4. How will children be able to stay safe on the road by themselves? 

    _____________________________________________________

5. What is the passage mainly about? 

    _____________________________________________________

题型:单项选择题

Act _____________ a duck. [ ]

A. look

B. like

C. book

题型:单项选择题

人类对物理现象的探索,发现了许多物理规律,推动了科学技术的发展.科学家在对光现象的研究中,研制了许多神奇的“眼睛”,拓展了人眼的功能.

(1)潜水艇在海面下航行时,人们可以用潜望镜观察海面上的情况,潜望镜是由两块平面镜制成的.平面镜所成的像跟物体的大小是______的,这个像是由于光______形成的.

(2)使用放大镜可以把眼睛不易辨清的物体“放大”.用放大镜观察物体时,镜到物体的距离应______焦距(选填“大于”、“小于”、“等于”).小明在用放大镜观察蚂蚁的活动规律时,要使看到的蚂蚁的像更大些,应将放大镜离蚂蚁______些.(选填“近”、“远”)

(3)能记录精彩瞬间的照相机所成的像是缩小______立的实像,拍摄时,物体到镜头的距离应大于______倍焦距.

题型:单项选择题

患者女,45岁。1周前发现有乳外上象限结节,直径约1.5cm,较硬,活动,无压痛,两侧乳腺对称, * * 及皮肤无特殊,两侧腋下均未及淋巴结,患乳无炎症或创伤史,钼靶拍片X线检查发现患乳有细小钙化点。

保乳术的适应证包括()

A.单发病灶

B.肿块<3cm

C.妊娠期乳腺瘤

D.病变位于乳晕外

E.患者自愿

F.以上均对

题型:单项选择题

在相同条件下,等量的()金属与足量盐酸反应生成H2的量最少。

A.镁

B.铝

C.钾

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