皮皮学,免费搜题
登录
搜题
【简答题】
A man was on the side of the road hitchhiking(搭便车)on a very dark night in the middle of a terrible rainstorm, with no cars on the road.The storm was so strong that the man could hardly see a few feet ahead of him.Suddenly, he saw a car come towards him and stop.The man, without thinking about it, got in the car and closed the door and only then did he realize that there was nobody behind the steering wheel(方向盘)! The car started to move very slowly.The man looked at the road and saw a curve (拐弯处)coming his way.Terrified, he started to pray, begging for his life.He had not come out of shock when, just before the car hit the curve, a hand suddenly appeared through the window and moved the wheel.The man, paralyzed with fear, watched how the hand appeared every time the car was drawing near a curve.Finally, although terrified, the man managed to open the door and jump out of the spooky car.Without looking back, the man ran through the storm all the way to the nearest town.In a state of complete horror, the man walked into a nearby bar and asked for two glasses of Scotch whisky. Then, still shaking with fright, he started telling everybody in the bar about the horrible experience he just went through in the spooky car.Everyone in the bar listened in silence and became frightened, with hair standing on end, when they realized the man was telling the truth because he was crying and he was certainly not drunk! About half an hour later, two other young men walked into the same bar and one said to the other, “Hey, there’s a stupid man who jumped into the car while we were pushing it!” 小题1:When the car was first drawing near a curve, the man ________. A.felt very curious B.was extremely frightened C.cried for help D.remained as calm as possible 小题2:According to the passage, what made the man’s experience believable? A.His reasonable behavior. B.His vivid description. C.His plain appearance. D.His honest attitude. 小题3:We can infer from the passage that ________. A.it is unsafe for people to take a free ride B.the man was telling a lie to his listeners C.the car probably broke down on the way D.the two young men were familiar with the man
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【判断题】在FANUC系统的数控铣床上G98G01Z-30.0F100表示刀具进给速度为100mm/min。
A.
正确
B.
错误
【单选题】数控铣床在加工过程,NC系统所控制的总是( )。
A.
零件轮廓的轨迹
B.
刀具中心的轨迹
C.
工件运动的轨迹
D.
以上均不对
【简答题】稳态时,当直流伺服电动机带动的负载减小,稳态转速变()(填大或小)
【单选题】用 FANUC 0i Mate-MC数控系统的数控铣床在绝对坐标方式下,45钢零件,在(15,20)坐标点钻一个直径3 0 mm深35mm的孔,Z轴坐标零点位于零件上表面,则 下列哪个程序段正确 ( )。
A.
G90 G02 X15 Y20 Z-35 F50;
B.
G90 G03 X15 Y20 Z- 4 5 F50;
C.
G90 G01 X15 Y20 Z- 4 5 F50;
D.
G90 G00 X15 Y20 Z- 4 5 F50;
【单选题】在FUNAC 0i 系统的数控铣床上编程时,公制单位输入指令为(   ) 。
A.
G32
B.
G54
C.
G20
D.
G21
【单选题】在数控铣床上加工一个半球体,至少需要几轴联动的数控系统?
A.
1
B.
2
C.
3
D.
4
【多选题】对POS机具保管及维修的风险防范正确的是()。
A.
POS储存有银行卡的交易数据,属于保密设备,商户应妥善保管。
B.
POS设备必须原件配套使用,非指定人员(如装机银行或装机专业公司的工作人员)不得对POS设备进行任何检测,私自拆修、改装和更换部件。
C.
对于主动上门要警惕,除要求检验其身份证明外,还应致电装机银行或公司进行核实。
D.
商户应注意保证POS机封条完好,如封条出现自然磨损,商户应通知装机银行或公司进行检查、更换。
E.
要求对POS机具进行检修维护的人员,收银员应提高警惕。
【判断题】在普通数控铣床上加装刀库和自动换刀装置,可构成一种带自动换刀系统的数控机床,称之为加工中心。( )
A.
正确
B.
错误
【判断题】在FANUC系统的数控铣床上G98 G01 Z-30 F100表示刀具进给速度为100mm/min。
A.
正确
B.
错误
【简答题】在数控铣床的基础上再配以刀库和自动换刀系统就构成 。
相关题目: