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【单选题】
如果旅游者要求单独外出购物,导游员的正确做法是A.
为保证旅游者安全，必须陪同前往
B.
旅游者自己的事和导游无关，无须过问
C.
无论何时都要陪同旅游者前往
D.
予以协助，必要时陪同前往
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【简答题】What is the difference between a scholarly article and a popular article?A. A scholarly article is
written for a scholarly audience, while a popular article is typically
written to the general publi...
【单选题】What is the main theme of this article?
A.
The article is about the effects of EU antidumping policy when foreign firms can jump antidumping duties in the EU.
B.
The article shows that duty jumping or duty pre-empting FDI occurs if the EU administration has broader objectives.
C.
The article is about the expectation of price undertakings reduces the incentives to engage in FDI and may even discourage.
D.
The article shows that FDI as long as products are not too differentiated
【单选题】The interior includes 135 seats, multiple lavatories and two crew rests. Certifying the interior components involves analyses and testing of the lighting, lavatories, stowage bins, dimmable windows an...
A.
crew rest is used for the VIP passenger to rest
B.
a lavatory is the place for passergers to drink
C.
a stowage bin is a container provided for stowing things away, in a boat or a plane
D.
a galley is a room for baby to have a bath
【单选题】To a passenger in shock, ______ may be rapid and the casualty may become _____ or unconscious.
A.
breathing ... confusing
B.
to breathe ... confused
C.
to breathe ... confusing
D.
breathing ... confused
【简答题】用电泳方法分离蛋白质的原理，是在一定的pH条件下，不同蛋白质的（）、（）和（）不同，因而在电场中移动的（）和（）不同，从而使蛋白质得到分离。
【多选题】用电泳方法分离蛋白质的原理,是在一定的 pH 条件下,不同蛋白质的( )的不同 ,因而在电场中移动的方向和速率不同,从而使蛋白质得到分离
A.
带电性质、带电量多少
B.
分子大小、分子形状
C.
仅与带电性质有关
D.
与凝胶过滤分离蛋白质原理相似
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