堤防工程在填筑施工时,土料或砾质土可采用( )卸料。
A.进占法
B.后退法
C.进占法或后退法
D.综合法
参考答案:C
据句意和首字母提示填空,完成下列句子。
1. My favorite are those shoes with a_______ heels.
You know-You can move the heels up and down.
2. I think the most helpful i_______ is the light bulb.
3. One day a c_______ in the restaurant where George worked sent
back his plate of fried potatoes because he said they were cut too thick.
4. Did you know the tea was invented by a_______?
5. A_______ to today's papers we know it will be hotter than yesterday.
6. Air is a m_______ of gases.
7. If you travel around China you will notice a very popular a_______ everywhere you go-basketball.
8. God c________ man. Do you believe it?
9. William s_______ an arrow (箭) toward the wild geese, and hit one in the neck.
10. Warm rains and summer suns d_______ the plants.
张青莲是我国著名的化学家。1991年,他准确测得In的相对原子质量为114.818,被国际原子量委员会采用为新的标准值。这是原子量表中首次采用我国测定的相对原子质量值。已知In的原子结构如图所示,则下列关于In的说法不正确的是( )
A.In为长周期元素
B.In为过渡元素
C.In容易导电导热
D.In在反应中容易失电子