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【单选题】
My husband,Tom, has always been good with animals, but I was still amazed when he befriended a female grouse(松鸡). It's _11_ for a grouse to have any contact(接触)with people. In fact, they're hard to spot,_12_ they usually fly off when they hear humans approaching. This grouse came into our lives in _13_. Tom was working out in the field when he _14_her walking around at the edge of the field. She was_15_ unafraid and seemed to be _16_ about what he was doing. Tom saw the _17_ bird several times, and she got more comfortable around him. We quickly grew _18_ of the bird and decided to call her Mildred. One day, as Tom was working, Mildred came within a few feet of him to watch. Tom _19_ he didn’t see her and kept working to see what she would do next. Apparently, she didn’t like to be _20_ . She’d run up and peck(啄)at Tom’s hands, then _21_ off to see what he would do. This went on for about 20 minutes, until Mildred became tired of the _22_ and left. As spring went and summer came, Mildred started to _23_ more and more often. _24_ Mildred felt comfortable enough to jump up on Tom’s leg and stay long enough for me to get a _25_ of the two of them together. This friendly grouse soon felt _26_ not just with our family, but with anybody who walked or drove by. When hunting season opened, we put a _27_ at the end of our driveway asking _28_ not to shoot our pet grouse. My father, who lived down the road, _29_ warned people not to shoot her. _30_ , hunters would stop and take pictures, because they had never seen anything like her.
A.
comfortable
B.
guilty
C.
anxious
D.
familiar
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【简答题】3 高级白矿片光率体椭圆半径位于45°时插入石膏试板,其干涉色______________,当矿片光率体椭圆半径与AAPP一致时,加入石膏试板,其矿片呈___________的干涉色。
【单选题】在螺纹标注中,应注出螺距的是 ()
A.
普通螺纹
B.
管螺纹和梯形螺纹
C.
细牙普通螺纹、梯形螺纹和锯齿形螺纹
D.
所有螺纹
【简答题】NC 机床的含义是 , CNC的含义是 。
【单选题】CNC 的含义是()
A.
先进制造设备
B.
计算机数字控制
C.
网络控制
D.
伺服数字控制
【单选题】以下选项中可能为二进制数的有?
A.
2019
B.
2020
C.
1010
D.
20AF
【判断题】CNC的含义是数字控制。()
A.
正确
B.
错误
【单选题】CNC的含义是( )
A.
数控机床
B.
数控技术
C.
计算机数字控制
D.
计算机数控机床
【单选题】CNC的含义是( )
A.
数字
B.
计算机
C.
数字控制
D.
计算机数控
【单选题】CNC的含义是
A.
数字控制
B.
计算机数字控制
C.
网络控制
D.
远程控制
【单选题】烹饪原料知识是一门烹饪学科。
A.
大众
B.
普通
C.
专业
D.
高科技