塔式起重机必须配备的保险装置有()两种。A、卷筒保险B、绳索保险C、锁止保险D、吊钩

题型:多项选择题

问题:

塔式起重机必须配备的保险装置有()两种。

A、卷筒保险

B、绳索保险

C、锁止保险

D、吊钩保险

考点:安全员安全员综合练习安全员综合练习题库
题型:多项选择题

根据首字母,中文或括号里词的适当形式填写单词。只限填Module 7 Unit 3 - Unit 5的单词。(共10小题;每小题1分,满分10分)

小题1:They encouraged the students to p________ in the running of the class.

小题2:He was so generous that he d________ thousands of pounds to charity.

小题3:What skills are needed to o________ this advanced machine?

小题4: The sports meet which is held a________ in our school is an exciting activity.

小题5: We have a________ (大量的) evidence to prove that he is right.

小题6:The elderly are afraid of ________ (遗弃) to the care of strangers.

小题7:Recent years ________ (见证) a great improvement in the relations between the two countries.

小题8: The children have been a great c________ (comfortable) to me through all of this.

小题9:It’s considerate of them to provide us with the basic ________ (require) of life.

小题10:Jack does some v________ (volunteer) work in the community at weekends.

题型:多项选择题

急性腰椎间盘突出症,下列哪种是不常用的治疗方法

A.腰背肌锻炼

B.卧床休息

C.治疗,推拿,按摩

D.牵引

E.腰围固定

题型:多项选择题

( )的不同点是它的输入不是随机不可知的,而是按先预定的规律变化。

A.恒值控制系统与随动控制系统

B.恒值控制系统与程序控制系统

C.程序控制系统与随动控制系统

D.程序控制系统与机电控制系统

题型:多项选择题

在计算机中,最适合进行数字加减运算的数字编码是 (22)

A.原码

B.反码

C.补码

D.移码

题型:多项选择题

会计人员视力保健费每人每年()元。

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