在()的人员要穿防静电工作服和防静电鞋。A、切换机泵 B、装油台上装车 C、切换油罐

题型:多项选择题

问题:

在()的人员要穿防静电工作服和防静电鞋。

A、切换机泵

B、装油台上装车

C、切换油罐

D、罐顶操作

考点:油品储运调合操作工高级油品储运调和操作工高级油品储运调和操作工题库
题型:多项选择题
已知曲线C:xy=1,过C上一点A1(x1,y1)作斜率k1的直线,交曲线C于另一点A2(x2,y2),再过A2(x2,y2)作斜率为k2的直线,交曲线C于另一点A3(x3,y3),…,过An(xn,yn)作斜率为kn的直线,交曲线C于另一点An+1(xn+1,yn+1)…,其中x1=1,kn=-
xn+1
x2n
+4xn
(x∈N*)

(1)求xn+1与xn的关系式;
(2)判断xn与2的大小关系,并证明你的结论;
(3)求证:|x1-2|+|x2-2|+…+|xn-2|<2.
题型:多项选择题

我国发射在赤道上空的同步卫星与赤道上的对应点相比[ ]

A.运转方向相同,角速度不同    

B.运转方向不同,角速度相同

C.运转方向相同,线速度不同    

D.运转方向不同,线速度相同

题型:多项选择题

语法填空 (共10小题,每小题1.5分,满分15分)

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空。

Chinese proverbs are rich and they are still widely used in Chinese people’s daily life.   1  these proverbs there are often interesting stories. For example, the proverb, “plucking up a crop   2 (help) it grow”, is based on the following story.

It is said that a short—tempered man in the Song Dynasty (960—1279) was very anxious to help   3 rice crop grow up quickly. He was thinking about   4  day and night. But the crop was growing much slower than he expected.

One day, he came up with an idea   5  he would pluck up all of his crop a few inches. He did so the next day.

He was very tired  6  doing this for a whole day,   7  he felt very happy since the crop did “grow”  8 (high).

His son heard about this and went to see the crop. Unfortunately the leaves of the crop began to wither.

This proverb is saying we have to let things go in their   9 (nature) course. Being too anxious to help an event develop often   10 (result) in the contrary to our intention.

题型:多项选择题

鼻-鼻旁窦恶性肿瘤为TisN0M0,按肿瘤分期是()。

A.0期

B.1期

C.2期

D.3期

E.4期

题型:多项选择题

()工作必须有监护人。监护人应熟知设备系统、防火要求及消防方法。其职责是:①检查防火措施的可靠性,并监督执行;②在出现不安全情况时,在权制止动火;③动火工作结束后检查现场,做到不遗留任何火源。动火工作进行时,消防人员必须始终在场。

A.检修;

B.试验;

C.动火。

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