下列哪种骨折容易并发血管损伤（） A.肱骨干骨折 B.肱骨髁上骨折 C.尺骨干骨折

交货质量检验中，约定质量标准的一般原则是( )。

A．按双方在合同中商定的技术条件、样品或补充的技术要求执行

B．无国家标准而有部颁标准的，按部颁标准执行

C．没有国家标准和部颁标准的产品，按企业标准执行

D．按颁布的国家标准执行

E．无国家标准而有当地标准的，按当地标准执行

For most of us, the rain that falls on our roof runs off into the ground or the sewer(下水道) system. But if you want to save a little water and reuse it on your lawns or plants --- or even use it for laundry, dishes, or other needs --- collecting rainwater from your gutter’s downspouts(檐槽的水落管) is a no-brainer.

According to John C. Davis, writing in E / The Environmental Magazine, just about any homeowner can collect rainwater, given that the roof and gutters do most of the work. And since an inch of rain falling on a 2,000-square-foot roof produces some 1,200 gallons of water, you can harvest enough to water your lawn or garden.

Plants and grass actually do better when fed rainwater instead of tap water, which is usually treated with substances that can hold back plant growth. Using rainwater can also extend the life of pipes, since the salts added to tap water may gradually damage the pipes. However, homeowners should set up a water purification system if they do plan to use rainwater for inside needs.

Rainwater harvesting can also be good for the local community, as it reduces the erosion, flooding, and pollution associated with heavy rainfall, and reduces dependence on public water supplies. So some states fund rainwater collection systems in their local communities.

Many varieties of rain barrel(桶) systems, starting at just $100, are available for home use. A typical setup is simply a rain barrel positioned under a gutter’s downspout. Skillful homeowners can make their own water harvesting systems, but buying one is a lot easier. Most garden centres offer a range of choices as well as tips.

小题1:The underlined word “no-brainer” in Para. 1 probably means something that ______.

A．is hard to deal with

B．is very easy

C．is of no real value

D．deserves more attention小题2:From Paragraphs 3 and 4, we can learn _______.

A．how to set up a water harvesting system

B．how a rain barrel system works

C．some advice on saving tap water

D．the benefits of using rainwater小题3:What is the topic of the passage ?

A．Basic gardening skills.

B．Water-saving techniques.

C．Wastewater treatment systems.

D．Roof rainwater collection.

给排水工种监理人员在无缝钢管、镀锌钢管材料验收中，下列说法正确的是（）

A.无缝钢管应符合现行国家标准《输送流体用无缝钢管》GB/T8163的规定

B.镀锌钢管的内外径应符合现行国家标准《低压流体输送焊接钢管》GBn3091的规定

C.无缝钢管内外表面应无裂纹、离层。外表面允许有少量折叠

D.镀锌钢管外表面可有少量未镀锌的黑斑和气泡存在

E.监理人员接到材料报验后，应先与施工方一道去现场检查后，再审核质保单、合格证

下列化学物质中，不是植物激素的是（）

A.乙烯

B.吲哚乙酸

C.吲哚丁酸

D.2，4—D

所有由Container派生的类称为______。