搜题请搜索小程序“爱下问搜题”
问题 单项选择题 A3/A4型题

患者，女性，30岁，晨起后颈部疼痛，逐渐加重，至午后颈痛不得转动，痛至肩背，行走时因颈痛加剧需以手扶头。查：两侧颈肌痉挛强硬，颈部活动明显受限。

该病的治疗原则为（）

A.舒筋活血，温经通络

B.舒筋活血，松解粘连

C.温经通络，滑利关节

D.松解粘连，温经通络

E.松解粘连，消肿止痛

答案

参考答案：A

不定项选择题

常温下，某溶液中由水电离出来的c(H+)＝1.0×10-13mol·L-1，该溶液可能是 [ ]

①二氧化硫　②氯化铵水溶液　③硝酸钠水溶液　④氢氧化钠水溶液

A．①④　　

B．①②　　

C．②③　　

D．③④

查看答案
单项选择题

The great advance (91) rocket theory 40 years ago showed that liquid-fuel rockets were far (92) in every respect to the skyrocket with its weak solid fuel, the only kind of rocket then known. (93) , during the last decade, large solid-fuel rockets with (94) fuels about as powerful as liquid fuels have (95) their appearance, and it is a favorite layperson’s question to (96) which one is "better". The question is meaningless. (97) might as well ask whether a gasoline or a diesel engine is "better". It all (98) on the purpose. A liquid-fuel rocket is complicated, (99) has the advantage that it can be controlled beautifully. The burning of the rocket engine can be stopped completely; it can be reignited when (100) . (101) , the thrust can be made to vary by adjusting the speed of the fuel pumps. A solid-fuel rocket, on the other hand, is rather (102) in construction, (103) hard to build when a really (104) size is desired. But once you have a solid-fuel rocket, it is ready for action (105) very short notice. A liquid-fuel rocket has to be fueled first and cannot be (106) readiness for very long after it has been fueled. (107) , once a solid-fuel rocket has been ignited, it will keep burning. It cannot be stopped and reignited (108) desired (it could conceivably be stopped and reignited after a pre-calculated time of burning has elapsed, and its thrust cannot be varied. Because a solid-fuel rocket can be kept ready for a long time, most military missiles (109) solid fuels, but human-piloted spaceflight needs the fine adjustments that can (110) be provided by liquid fuels.

A．should

B．when

C．though

D．if
查看答案