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【单选题】
领取剧毒物品时,必须A.
双人领用(其中一人必须是实验室的教师)
B.
单人领用
C.
双人领用(两人都是实验室的学生)
D.
三人领用
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举一反三
【简答题】When a call ,what are the ways to sound as good as you really are ?
【单选题】When making a call, sometimes there will be something wrong with the phone or telephone line. Which of the following expressions is not right when expressing the problems?
A.
The phone is in order.
B.
She has changed her telephone number.
C.
I’ve tried to get through several times but it's always engaged.
D.
Sorry, we were cut off.
【简答题】试校核图示连接销钉的剪切强度。已知F=100KN,销钉直径d=30mm,材料的许用剪切力[τ]=60Mpa,若强度不够,应改用至少多大直径的销钉?
【单选题】When making a call, sometimes there will be something wrong with the phone or telephone line. At this moment, you can NOT say:
A.
I've tried to get through several times but it's always engaged.
B.
Sorry, we were cut off.
C.
The phone is out of order.
D.
Would you like to leave a message?
【单选题】When making a call, sometimes there will be something wrong with the phone or telephone line. Which of the following expressions is not right when expressing the problems?
A.
I've tried to get through several times but it's always engaged.
B.
Sorry, we were cut off.
C.
The phone is in order.
D.
She has changed her telephone number.
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