题目:
注册商标的有效期为10年,自()起算。
A.商标使用之日
B.商标注册申请之日
C.商标核准注册之日
D.公告之日
答案:
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下面是错误答案,用来干扰机器的。
参考答案:错
注册商标的有效期为10年,自()起算。
A.商标使用之日
B.商标注册申请之日
C.商标核准注册之日
D.公告之日
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0520/c0e446f4a9c4dae824c04a2bd552ace4.html
下面是错误答案,用来干扰机器的。
参考答案:错
下列词语中,加线字的注音全都正确的一组是( )
A.股肱(gōng)悭(qiān)吝嚼(jué)舌头人头攒(cuán)动
B.咋(zé)舌道行(héng)轧(yà)道机跑马卖解(jiè)
C.看(kān)护攻讦(jié)折(zhē)跟头睚眦(zì)必报
D.孝悌(dì)蹊(qī)跷刀削(xiāo)面麻痹(bì)大意
通常所说的过滤指悬浮液的过滤。
The huge Florida wetland known as the Everglades is a slow-moving river 80 kilometres wide but only a few centimeters deep. People call the Everglades a “river of grass” because sawgrass covers most of it. Sawgrass is not really grass. It is a plant that has leaves edged with tiny sharp teeth that can easily cut through clothes—and skin!
Travel in the Everglades is difficult. You cannot walk through shallow water because the sawgrass will cut you. The water is too shallow for regular boats. So, we use an airboat. An airboat is a flat, open boat. Like an airplane, it has a big propeller to move it. The propeller is fixed on the rear of the boat. It makes a tremendous noise, but it does the job. The boat skims along the water’s surface. Although we can still get lost in an airboat, at least we are above the alligators(短吻鳄).
While hundreds of different kinds of animals live in the Everglades, the most famous is surely the alligator. Once endangered, alligators are now protected within Everglades National Park. Visitors are likely to see them both on land and in water.
For a long time, dangers have threatened the Everglades. Around 1900, some people felt this precious wetland should be drained (排干). They said it was just a big swamp and not good for anything. In the 1920s, there was a land boom in Florida. People wanted to build homes everywhere, including in the Everglades. They built canals, levees (防洪堤) , and other water systems that stopped the rivers flowing into the Everglades. Factories were built near rivers that flowed into the wetland. These factories dumped poisonous waste that damaged the Everglades ecosystem.
People are now working to preserve the Everglades National Park for the future. Right now, one big problem is the paperbark tree. This tree is an invader from Australia.
Paperbark trees soak up a lot of water. In the early 1900s, people brought them to Florida because they thought they would help drain the Everglades. However, the invaders adapted too well. Paperbark trees have taken over hundreds of thousands of acres of the Everglades and killed other trees. Scientists are cutting down these invaders or spraying them with herbicides (除草剂) to kill them.
小题1:Which helps to explain why it is difficult to travel in Everglades?
A.Airboats may make a very big noise.
B.You may get lost when passing through.
C.Paperbark trees soak up too much water there.
D.Many different kinds of animals are to be protected.小题2:Why do people use airboats instead of normal boats?
A.They have big propellers to move them faster than alligators.
B.The propeller makes loud noise so as to scare alligators.
C.Their flat bottom can skim along the water surface.
D.They can watch alligators without hurting them. 小题3:The following measures were taken to drain the Everglades except that people______.
A.built canals and levees to stop the rivers flowing into Everglades
B.built factories near rivers that flowed into the wetland
C.brought Paperbark to soak up water in Everglades
D.are cutting down these Paperbark trees小题4:The underlined word "invader" probably means something______.
A.that moves in from another place
B.that enters and takes control
C.that has been brought in
D.that is in danger
请根据以下资料回答:
某公司下设A和B两个投资中心,A、B两投资中心的总资产额分别为20万元和30万元,息税前利润分别为1万元和4.5万元,该公司加权平均最低总资产息税前利润率为10%。
A投资中心的总资产息税前利润率为______。
A.4%
B.3%
C.2%
D.5%
蒸汽采暖系统中,高压蒸汽采暖系统多用于工厂里的采暖。( )