问题
单项选择题
DS3光学水准仪的基本操作程序是( )。
A．对中、整平、瞄准、读数
B．粗平、瞄准、精平、读数
C．粗平、精平、对光、读数
D．粗平、精平、瞄准、读数
答案
参考答案：B
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DS3光学水准仪的基本操作程序是( )。
A．对中、整平、瞄准、读数
B．粗平、瞄准、精平、读数
C．粗平、精平、对光、读数
D．粗平、精平、瞄准、读数
参考答案：B
| 完形填空。 | |||
| Hello, I'rn Mike. This is __1__ room. I have two __2__ .One is yellow. The other is __3__ . The yellow one is on __4__ desk. The black one __5__ On my chair, Look, that is __6__ Orange.It's under the desk. Those __7__ my books. __8__ are in my backpack. Oh, a dog is __9__ the bed. Its (它的) name __10__ Xixi. I like it very much. | |||
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