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【单选题】
氯仿可以作为麻醉剂,但常常因为保存不慎而被空气氧化,产生剧毒光气( COCl 2 ) , 为了防止事故发生,在使用前必须先检测氯仿是否变质,用的试剂是A.
NaOH 溶液
B.
HCl 溶液
C.
AgNO 3 溶液
D.
H 2 O
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【简答题】什么是第一、第二胶结界面？
【单选题】已知2（a-3）＜ 2-a 3 ，那么不等式 a(x-4) 5 ＜x-a的解集是（ ）
A.
x＜ 1 5
B.
x＜ a-5 a
C.
x＞ a 5-a
D.
x＜ a 5-a
【简答题】已知A=x 2 +5x，B=3x 2 +2x-6，求2A-B的值，其中x=-3．
【简答题】三十一岁妇女，近日阴道分泌物增多，腰骶部疼痛，盆腔不下坠痛，后出血，妇检宫颈中度糜烂，宫体大小正常，双附件未见异常。该患者治疗前应做哪些检查A、宫颈刮片 B、碘试验 C、宫颈组织切片 D、腹腔镜 E、聚合酶链反应 导致该病最主要的致病菌为A、人乳头瘤病毒 B、葡萄球菌 C、结核菌 D、链球菌 E、厌氧菌 治疗的方法有A、激素治疗 B、冷冻治疗 C、微波治疗 D、手术治疗 E、药物治疗 物理治疗...
【简答题】已知（2x-1） 5 =a 0 x 5 +a 1 x 4 +a 2 x 3 +a 3 x 2 +a 4 x+a 5 ，则a 1 +a 3 +a 5 =______．
【单选题】The high percentage of boys among mathematical prodigies __________.
A.
means that boys are cleverer in mathematics than girls
B.
doesnt mean that boys are cleverer in mathematics than girls
C.
means that boys do much better in math exams than girls
D.
may be explained by the fact that boys work harder than girls
【简答题】“Boys” in the 17th paragraph implies that__________． [A] boys are not as quiet as girls [B] boys love to have fun by nature [C] boys are too naughty to be obedient [D] boys are more adventurous than g...
【单选题】What maxim is flouted in such extreme examples of tautologies as 'Boys are boys'， and'Lies are lies'?
A.
The maxim of quantity.
B.
The maxim of quality.
C.
The maxim of relevance.
D.
The maxim of manner.
【单选题】She said, 'There are twenty boys in my class.' She said that ______. [ ]
A.
there were twenty boys in my class
B.
there were twenty boys in her class
C.
there are twenty boys in her class
D.
there are twenty boys in my class
【单选题】— My sons are not a little restless. — Oh? Boys _______ be boys．
A.
should
B.
can
C.
may
D.
will
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