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【单选题】
Every spring semester, the School of Business coordinates a luncheon with local business leaders for graduating seniors, their families, and friends. Corporate sponsorship pays for the lunches of each of the seniors, but students have to purchase tickets to cover the cost of lunches served to guests they bring with them. The following histogram represents the attendance at the senior luncheon, where X is the number of guests each graduating senior invited to the luncheon and f is the number of graduating seniors in each category. how many graduating seniors attended the luncheon?
A.
4
B.
152
C.
275
D.
388
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【单选题】SrCO 3 在下列试剂中溶解度最大的是:
A.
0.10mol·L -1 Na 2 CO 3
B.
0.10mol·L -1 Sr(NO 3 ) 2
C.
纯水
D.
0.10mol·L -1 HAc
【单选题】SrCO 3 在下列试剂中溶解度最大的是( )
A.
0.10mol/L HAc
B.
0.10mol/L Sr(NO 3 ) 2
C.
纯水
D.
0.10mol/L Na 2 CO 3
【判断题】醉酒的人犯罪,可以从轻或者减轻处罚。此说法正确吗?
A.
正确
B.
错误
【多选题】下列可以增强种植体骨结合的方式有:
A.
种植体表面阳极氧化
B.
种植体表面羟基磷灰石喷涂
C.
种植体表面钛浆等离子喷涂
D.
种植体表面喷砂
【单选题】SrCO3在下列试剂中溶解度最大的是:
A.
纯水
B.
0.10 mol·L-1 HAc
C.
1.0 mol·L-1 Na2CO3
D.
0.10 mol·L-1 Sr(NO3)2
【单选题】属于弹性敏感元件的有( )。1螺旋弹簧;2波纹管;3金属膜片;4节流盲室;5弹簧管;6橡胶膜片。
A.
①③④⑤
B.
①②⑤⑥
C.
②③④⑤
D.
②③⑤⑥
【单选题】What should not a guide do when using body language?
A.
Use proper and appropriate body language while take the group members’ tradition and customs into considerations
B.
Behave naturally
C.
Combine the verbal and non-verbal languages skillfully.
D.
Make faces at the tourists
【单选题】属于弹性敏感元件的有 。 1螺旋弹簧;2波纹管;3金属膜片;4节流育室;5弹簧管;6橡胶膜片。
A.
①③④⑤
B.
①②⑤⑥
C.
②③④⑤
D.
②③⑤⑥
【判断题】A guide should inform tourists of the limit of traditional Chinese medicine one can take out of China for personal use: product value of RMB 300 for foreign tourists; RMB 1,500 for the tourists from H...
A.
正确
B.
错误
【判断题】It is the parents's responsibility to take care of their child, so the tour guide should not offer a helping hand.
A.
正确
B.
错误
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