皮皮学，免费搜题
登录
搜题
【简答题】
（5分）化学与生活密切相关。 （1）膳食合理、营养均衡是健康的基本保证。下列食物中，富含糖类的是 （填序号，下同）。加钙牛奶中的“钙”是指 （填“元素”或“分子”），缺钙可能患有的疾病是 （填“骨质疏松”或“贫血”） 。 A．蔬菜 B．牛奶 C．米饭 （2）塑料滑板主要由塑料、钢、玻璃纤维（主要成分有二氧化硅和氧化铝等）、铝合金等材料制成，其中属于有机合成材料的是 。 （3）乙醇汽油是将乙醇与汽油以一定比例混合而成。下列说法中正确的是 。 A．乙醇属于可再生能源 B．乙醇汽油不能用作汽车燃料 C．使用乙醇汽油可减少大气污染 D．使用乙醇汽油可节省石油资源
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】When the immigration officer asks you the questions, you should _______.
A.
Be nervous and keep silent.
B.
Keep clam and give short answers.
C.
Excited and talk a lot to show your English ability.
D.
Ignore it.
【单选题】( )(改编)Father' s Day is on ________ Sunday of June.
A.
three
B.
third
C.
the third
D.
thirds
【判断题】When going through the immigration formalities, you should show your ticket, passport and immigration card.
A.
正确
B.
错误
【单选题】All masters，owners and agents（）that vessels when requesting Immigration and Port Health Clearance must anchor at the designated Immigration and Quarantine Anchorage and exhibit the appropriate signals...
A.
remind
B.
is reminded
C.
are reminded
D.
to remind
【单选题】My heart sank when the man at the immigration counter gestured to the back room. I'm an American born and raised,and this was Miami,where I live,but they weren't quite ready to let me in yet. 'Please ...
A.
she and her husband returned from Jamaica
B.
her name was similar to a terrorist's
C.
she had been held in Montreal
D.
she had spoken at a book event
【单选题】When was the immigration of Chinese laborers stopped?
A.
1882.
B.
1883.
C.
1884.
D.
1885.
【单选题】When the immigration officer asks you the questions, you should _______
A.
Be nervous and keep silent
B.
Keep clam and give short answers.
C.
Excited and talk a lot to show your English ability .
D.
Ignore him
【单选题】（）是指区域或省内处理中心与其所辖的同城或市内中心形成点对点的关系，各同城或市内中心的快件直接与区域或省内中心进行交换。
A.
辐射型
B.
混合型
C.
直线型
D.
环线型
【简答题】实验 11 微生物菌种的生理生化鉴定
相关题目：
参考解析：
知识点：
题目纠错 0
发布
