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男性，65岁，有便秘多年。近半年来站立时发现阴囊部位出现肿块，呈梨形，平卧时可还纳。体检发现外环扩大，压迫内环嘱患者咳嗽，指尖有冲击感，平卧回纳肿块后，手指压迫内环处，站立咳嗽，肿块不再出现。 医生决定为该患者行疝修补术，为避免术后疾病复发，术前准备中最重要的是（）
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案例分析题C is sometimes referred to as a ’high -level （） language’. Some people think that’s an insult, but it’s actually a deliberate and significant aspect of the language. If you have （） in assembly language, youll probably find C very natural and comfortable (although if you continue to focus too heavily on machine - level details, youll probably end up with unnecessarily non- portable programs). If you havent programmed in assembly language, you may be frustrated by C ’s lack of certain higher - level features. In either case, you should understand why C was de- signed this way: so that seemingly - simple constructions expressed in C would not expand to arbitrarily expensive ( in time or （） ) machine language constructions when （） . If you write a C program simply and succinctly, it is likely to result in a succinct, efficient machine language executable. If you find that the （） resulting from a C program is not efficient, it’s probably because of something silly you did, not because of something the compiler did behind your back which you have no control over. In any case, there’s no point in complaining about C’s low - level flavor: C is what it is. If you find that the （） resulting from a C program is not efficient.
案例分析题C is sometimes referred to as a ’high -level （） language’. Some people think that’s an insult, but it’s actually a deliberate and significant aspect of the language. If you have （） in assembly language, youll probably find C very natural and comfortable (although if you continue to focus too heavily on machine - level details, youll probably end up with unnecessarily non- portable programs). If you havent programmed in assembly language, you may be frustrated by C ’s lack of certain higher - level features. In either case, you should understand why C was de- signed this way: so that seemingly - simple constructions expressed in C would not expand to arbitrarily expensive ( in time or （） ) machine language constructions when （） . If you write a C program simply and succinctly, it is likely to result in a succinct, efficient machine language executable. If you find that the （） resulting from a C program is not efficient, it’s probably because of something silly you did, not because of something the compiler did behind your back which you have no control over. In any case, there’s no point in complaining about C’s low - level flavor: C is what it is. If you have （） in assembly language.
案例分析题C is sometimes referred to as a ’high -level （） language’. Some people think that’s an insult, but it’s actually a deliberate and significant aspect of the language. If you have （） in assembly language, youll probably find C very natural and comfortable (although if you continue to focus too heavily on machine - level details, youll probably end up with unnecessarily non- portable programs). If you havent programmed in assembly language, you may be frustrated by C ’s lack of certain higher - level features. In either case, you should understand why C was de- signed this way: so that seemingly - simple constructions expressed in C would not expand to arbitrarily expensive ( in time or （） ) machine language constructions when （） . If you write a C program simply and succinctly, it is likely to result in a succinct, efficient machine language executable. If you find that the （） resulting from a C program is not efficient, it’s probably because of something silly you did, not because of something the compiler did behind your back which you have no control over. In any case, there’s no point in complaining about C’s low - level flavor: C is what it is. machine language constructions when （）
案例分析题Currently the Pentium chip or （） , made by （） , is the most common CPU though there are many other companies that produce processors for personal computers. One example is the CPU made by Motorola which is used in Apple computers. With faster processors the clock speed becomes more important. Compared to some of the first computers which operated at below 30 megahertz ( （） ) the Pentium chips began at 75 megahertz in the late 1990g. As of mid 2003 speeds now exceed 3000 + megahertz or 3 gigahertz (check your local computer store for the latest speed) . It depends on the （） that the chip is housed in, or the （） , as to whether you are able to upgrade to a faster chip. The motherboard contains the circuitry and connections that allow the various component to communicate with each other. It depends on the （） that the chip is housed in
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