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【判断题】
机械加工人员上岗前必须经过培训,合格后方可上岗。
A.
正确
B.
错误
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【单选题】下面哪个图形表示的是轴线为沿y向的圆柱体正等轴测图
A.
1
B.
2
C.
3
D.
4
【单选题】According to the author, there is a trend______.
A.
for people to travel more during hard times
B.
for younger people to delay working by traveling first
C.
for travelers to spend less
D.
for younger travelers to be unrealistic as they travel
【单选题】当圆柱的轴线垂直于投影面时,顶圆和底圆的正等轴测图都是
A.
B.
椭圆
C.
矩形
D.
抛面线
【判断题】圆的正等测图是椭圆,三个坐标面或平行面上的圆的正等测图是大小相等形状相同的椭圆,只是长短轴方向不同
A.
正确
B.
错误
【单选题】After the Asian Games, ( ) people come ti Guangzhou for a visit during holidays.
A.
thousand
B.
thousands of
C.
five thousands
D.
five thousand of
【单选题】I stayed in Japan only a few matches, , I went through a series of hardship.
A.
during when
B.
at that time
C.
during which time
D.
of which time
【单选题】Houses in Ica experienced terrible destruction during the E1 Nino event because _____.
A.
tile El Nino event was the strongest
B.
it seldom rained there
C.
the houses couldn't stand the flood
D.
E1 Nino was unexpected
【单选题】—Why don’t you drive to work today? —Sometimes riding is even than driving during the busy traffic time.
A.
later
B.
faster
C.
slower
D.
more slowly
【单选题】用以增加疗效的作用
A.
协同作用
B.
拮抗作用
C.
相互作用
D.
联合用药
E.
复方制剂
【简答题】用以增加疗效的作用
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