单项选择题

职业生涯规划是基于( )认定的一个人生发展的方向、目标、定位。
A 周围的人
B 个人自主
C 以上都不对
D 父母

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单项选择题

下图所示的寄存器可以存储（）位二进制数码。

A、2
B、3
C、4
D、8

多项选择题

Why must a high vacuum be provided during vacuum evaporation?
A、The mean free path of vapor atoms / molecules must be larger than the distance between the crucible and the wafer.
B、The mean free path of vapor atoms / molecules must be smaller than the distance between the crucible and the wafer.
C、Oxidization of the deposited film must be avoided.
D、The deposited film must be of high purity.