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【单选题】
关于 M=1+b/a 叙述正确的是A.
M 表示放大率
B.
a 表示肢片距
C.
b 表示焦片距
D.
影像放大对像质的影响大于变形
E.
放大对成像是有害的
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反馈参考答案：
举一反三
【单选题】Prior period adjustments are reported in the:
A.
Multiple-step income statement.
B.
Balance sheet.
C.
Statement of retained earnings.
D.
Statement of cash flows.
E.
Single-step income statement.
【单选题】在PowerPoint中，为项目自定义动画效果，若（ ）复选框处于选中状态，则可在幻灯片视图中立刻查到动画效果。
A.
“效果”
B.
“自定义动画”
C.
“自动预览”
D.
“预览效果”
【单选题】According to the passage, in the period prior to 1975, each of the following considerations helped determine whether a union would attempt to organize a certain group of clerical workers EXCEPT______
A.
the number of clerical workers in that group
B.
the number of women among the clerical workers in that group
C.
whether the clerical workers in that area were concentrated in one workplace or scattered over several workplaces
D.
the degree to which the clerical workers in that group were interested in unionization
E.
whether all the other workers in the same jurisdiction as that group of clerical workers were unionized
【单选题】La4A3021 一只220V/60W与一只220V/45W的灯泡串联接于300V电源上,则( )。
A.
60W灯泡较亮；
B.
45W灯泡较亮；
C.
一样亮；
D.
都不亮。
【单选题】Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in _____.
A.
an air bound fuel system
B.
damage to cylinder heads and pistons
C.
excessive fuel injection
D.
excessive air valve lift
相关题目：
【单选题】在PowerPoint中，为项目自定义动画效果，若（ ）复选框处于选中状态，则可在幻灯片视图中立刻查到动画效果。
A.
“效果”
B.
“自定义动画”
C.
“自动预览”
D.
“预览效果”
参考解析：
知识点：
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