There have been many()in their marriage bu

题型:单项选择题

问题:

There have been many()in their marriage but they still love each other.

A.right and wrong 

B.back and forth 

C.ups and downs 

D.right and left

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题型:单项选择题

The green shorts _____ 30 yuan.[ ]

A. is on sale  

B. are on sale  

C. are on sale at  

D. are on sale for

题型:单项选择题

企业在社会进步、经济发展中所应担当的角色和责任是指( )。

A.企业哲学

B.企业使命

C.企业宗旨

D.企业改革

题型:单项选择题

在按FOB吊钩下交货的术语成交时,其货物风险转移是( )。

A.以装运港吊钩下为界
B.以装运港船舷为界
C.以装运港船上为界
D.以装运港码头为界

题型:单项选择题

外感头痛与内伤头痛应如何鉴别?

题型:单项选择题

玻璃密封胶主要以氯丁密封胶、()、硅酮密封胶为主。

A.聚氨酯密封胶

B.乙稀密封胶

C.环氧树脂密封胶

D.酚醛树脂胶

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