呕吐可能导致下列哪些类型水、电解质和酸碱平衡紊乱：( )此题为多项选择题。

未分类题心肌肌钙蛋白检测在急性冠状动脉综合征中的临床意义主要有：( )此题为多项选择题。

未分类题下列各项中可致皮肤发黄的为：( )此题为多项选择题。

单项选择题第一次世界大战前，下列条约出笼的先后顺序是：（）①英法协约②法俄协约③德奥协约④英俄协约A.③②④①B.③②①④C.②③①④D.③①④②

单项选择题I am doubtful whether I can solve the puzzle, but I ’llhave a ____ at it.A) shootB) shotC) attemptD) try

单项选择题He has great confidence in _____ the company_______.A) turning ⋯ upB) turning ⋯overC) turning ⋯.aroundD) turning t

单项选择题This decision had removed the last ______ to the hostages' release.A) solutionB) approvalC) dynamicsD) obstacle

单项选择题Some teenagers never even read a newspaper, ______ a book; they spend muchtime playing online games though.A) let outB) let aloneC) let go ofD) hold fast

单项选择题There is no extra Internet charge to send or receive video images, though youhave to ________for a free instant messaging service.A) check inB) log inC) sign upD) draw up

单项选择题She knew very well that failing her exams could _________her whole future.A) jeopardizeB)broadenC)arrangeD)brainstorm

单项选择题But, ___ reflection, I think I did the 'young guy' afavor by not giving him a job.A) inB) withC) onD) over

未分类题Which description does not fit an art lesson in a Western country?A、Children draw the same pictures as that on the blackboard.B、Each child draws a different picture.C、Children listen while the teacher lectures.D、Children watch TV in class.

单项选择题The fight for the leadership gave a fascinating insight into the group's _______.A) masterB) syntacticC) dynamicsD) institution

未分类题The festival the Celts held at the beginning of every winter is for the following except ().A、the goddess of gardensB、ChristC、the Lord of the DeadD、the saints

单项选择题The girl ___ me along the aisle to my seat .A) accompaniedB) usheredC) conductedD) guided

单项选择题人们常说，身体是“三分治七分养”，对于这件事() A.反馈控制比前馈控制更重要 B.现场控制比反馈控制更重要 C.反馈控制比现场控制更重要 D.前馈控制比反馈控制更重要