皮皮学，免费搜题
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【判断题】
1968年,发生在日本的北九州市、爱知县一带的米糠油中毒事件,其实是由于食用油厂在生产米糠油时,使用多氯联苯作脱臭工艺中的热载体,导致这种毒物混入米糠油。A.
正确
B.
错误
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举一反三
【单选题】Choose the best way to approach the guest in the following situation. Several guests remain in the restaurant after closing time. You say:
A.
You have to leave. We are closed.
B.
Can I ask that you leave?We have to clean up.
C.
I'm sorry for the inconvenience Sir, but our staff have to clean the restaurant.
【单选题】Choose the best way to approach the guest in the following situation. A person asks you which room is Mr Smith in. You say:
A.
I cannot tell you.
B.
If you ask at reception, they may be able to help.
C.
I don't know.
【单选题】Choose the best way to approach the guest in the following situation. The guest orders salmon, but there is no salmon left. You say:
A.
Oh, I'm sorry. We're all out of salmon. Perhaps the trout would be a good choice for you?
B.
No, there's no salmon left.
C.
No, the salmon is finished for the night.
【单选题】Choose the best way to approach the guest in the following situation. You don't have any room in your restaurant. You say:
A.
I'm sorry, sir. We're full.
B.
I'm very sorry, sir. We don't have any tables available at this time.
C.
We are full.
【单选题】Choose the best way to approach the guest in the following situation. If a guest says ''Thank you''. You say:
A.
No worries.
B.
You are most welcome.
C.
Not a big deal.
【简答题】试求图示各杆1-1,2-2,3-3截面上的轴力,并作轴力图。
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