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【多选题】
如图甲所示 , 在“光电效应”实验中 , 某同学用相同频率的单色光 , 分别照射阴极材料为锌和铜的两个不同的光电管 , 结果发生光电效应 . 图其中一个光电管的遏止电压 U c 随照射光频率 ν 变化的函数关系图像 . 对于这两个光电管 , 下列判断正确的是 ( )A.
因为不同材料的逸出功不同 , 所以遏止电压 U c 不同
B.
光电子的最大初动能不同
C.
因为光强不确定 , 所以单位时间逸出的光电子数可能相同 , 饱和光电流也可能相同
D.
两个光电管的 U c -ν 图像的斜率可能不同
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举一反三
【单选题】I know you’re new in the job,but____ me and you’ll be all right.
A.
stick to
B.
stick with
C.
stick out
D.
stick around
【简答题】用下面方框中的短语的正确形式填空，使句子意思完整。 come across stick out hear from dying to dry out dry up in need adapt to up to for sure 1. I am _____ get that job. 2. The stream _____ during t...
【单选题】Now you’ve made the decision, you must______.
A.
stick it
B.
stick it to
C.
stick to it
D.
to stick it
【单选题】骨骼肌细胞中的三联管结构是指（ ）
A.
每个横管及其两侧的肌节
B.
每个横管及其两侧的终池
C.
横管和肌质网
D.
每个纵管及其两侧的横管
E.
每个纵管及其两侧的肌节
【单选题】He [Snake] moved next to the stick. Then Anansi quickly used his web to tie Snake to the stick.
A.
Snake happily moved to the stick. At that moment, Anansi wrapped his web around him.
B.
As soon as Snake moved next to the stick, Anansi quickly used his web to tie him to the stick.
C.
As soon as Snake came near the stick, Anansi strapped him to the stick with his web.
D.
Snake very carefully moved next to the stick. Then Anansi quickly used his web to tie him to the stick.
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