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【单选题】
在Excel2010中,“页眉/页脚”的设置属于— 。
A.
“单元格格式”对话框
B.
“打印”对话框
C.
“插入函数”对话框
D.
“页面设置”对话框
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皮皮学刷刷变学霸
举一反三
【单选题】Figure 1 shows a ______ of the DS18B20.
A.
bag
B.
block diagram
C.
study
【单选题】关于喷油提前角和供油提前角,以下说法正确的是()
A.
喷油提前角等于供油提前角
B.
喷油提前角比供油提前角大
C.
喷油提前角比供油提前角小
D.
以上说法都不正确
【单选题】The figure below Shows a record used for recording information about a named event. Which of the following statement is incorrect? ( ) VAR r: RECORD event: ARRAY[1.. 10] of Char; place: ARRAY[1.. 20] ...
A.
This is a one—dimensional array of records, also called a table
B.
The event can occur in up to 20 places and on up to 5 different dates in each place
C.
This is so called record of arrays
D.
A reference to r. place[i], date[j], mo will access the month of the jth occurrence, in the ith place, of the event named in r. event
【单选题】供油提前角、喷油提前角和喷射延迟角之间的关系为()。
A.
供油提前角为喷油提前角与喷射延迟角之和
B.
喷油提前角为供油提前角与喷射延迟角之和
C.
供油提前角为喷油提前角与喷射延迟角之差
D.
喷射延迟角为供油提前角与喷油提前角之和
【多选题】老化红细胞膜化学组成的改变包括有:
A.
膜脂成分改变
B.
膜酶活性降低
C.
膜蛋白发生共聚集现象
D.
膜糖成分改变
E.
以上均不是
【单选题】The figure below shows a record used for recording information about a named? event.Which of the following statement is incorrect? VAR r:record event:array[1..10] of char place:array[1..20] of record ...
A.
This is a one-dimensional array of records, also called a table.
B.
This is so called record of arrays
C.
The event can occur in up to 20 places and on up to 5 different dates in each place.
D.
A reference to r.place[i].date[j].mo will access the month of the jth occurrence, in the ith place, of
【单选题】喷油提前角调整特性是指?
A.
转速和油量调节机构位置保持不变时,有效功率和有效燃油消耗率随喷油提前角的变化规律
B.
负荷和油量调节机构位置保持不变时,有效功率和有效燃油消耗率随喷油提前角的变化规律
C.
转速和油量调节机构位置保持不变时,功率和燃油消耗率随喷油提前角的变化规律
D.
转速和油量调节机构位置保持不变时,负荷和转速随喷油提前角的变化规律
【单选题】铂铑 30- 铂铑 6 热电偶的分度号为( C )。
A.
S
B.
K
C.
B
D.
E
【单选题】燃油喷射起始点(喷油提前角)()。
A.
随发动机转速提高而提前(即喷油提前角增大)(按曲轴转角记)
B.
随发动机转速提高而延后(即喷油提前角减小)(按曲轴转角记)
C.
随发动机负荷提高而提前(即喷油提前角增大)(按曲轴转角记)
D.
随发动机负荷提高而延后(即喷油提前角减小)(按曲轴转角记)
【单选题】在柴油机中可以进行调节的喷射提前角是_______ 。
A.
几何供油提前角
B.
实际喷油提前角
C.
喷油提前角
D.
A+B
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