题目内容

患者张某,30岁,诊断为“肺结核”。入院指导时告知患者,病区的清洁区是:

A. 医护办公室
B. 配膳室
C. 病区走廊
D. 化验室
E. 患者浴室

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关于紫外线消毒注意事项中以下不正确的是:

A. 至少每两周用无水酒精棉球轻轻擦拭一次
B. 病室内适宜温度为20—40度
C. 每次照射完毕记录使用时
D. 病室内相对湿度为30%--40%
E. 如用无臭氧紫外线灯消毒空气,可连续照射2—4小时

简述煮沸消毒的注意事项。

1、Integers are represented in the two’s complement format in most computers.2、The carry is discarded if it is obtained after addition of the leftmost bits.3、Just negate the number to be subtracted and added when we execute subtraction operation in two’s complement.4、Overflow occurs when a number is not within the range defined by the bit allocation.5、Logical operations includes unary operations (that take one input) and binary operations (that take two inputs).6、The result of the binary AND operator is true if both inputs are true. The result of the binary OR operator is false if both inputs are false. The result of the binary XOR operator is false if both inputs are the same.7、A mask is a bit pattern that is applied to a target bit pattern to get a particular result.8、Set the corresponding mask bit to 0 and use the AND operator if you need to unset (clear) a bit in a target bit pattern.9、Set the corresponding mask bit to 1 and use the OR operator if you want to set a bit in a target bit pattern.10、Set the corresponding mask bit to 1 (0) and use the XOR (XNOR) operator if you wish to flip a bit in a target bit pattern. Besides, you can exchange two number with three XOR operations, without using another intermediate variables.11、Logic operators including NAND, NOR, XOR, and XNOR are logic combination of the three basic logic operators, including NOT, AND, and OR.12、Logic operators have the corresponding Logic Diagram Symbol and Logic Function Expression in computer science field. It’s widely applied in digital electronics.13、Overflow and underflow are two common errors that usually occur in arithmetic operations. But they are totally different issues. Underflow means that the operation results of floating-point number is less than the minimum value that a computer system can represent. While overflow means that an operation result is out of the normal range that an N-bit pattern can represent, not a computer system.14、Logical shift operators are usually applied to unsigned numbers while arithmetic shift operators are mainly applied to signed numbers. Arithmetic shift operations are often used to multiply or divide by constant powers of 2.

实验中我们测量所用的橡胶的样品是什么形状的( )

A. 圆形薄片
B. 圆柱体
C. 正方体
D. 长方体