搜题请搜索小程序“爱下问搜题”
问题 多项选择题

钢筋工程中有关钢筋安装描述正确的是（）。

A.不得站在钢箍上绑扎柱钢筋

B.起吊预制钢筋骨架时，下方不得站人，待骨架吊至离就位点1m以内时方可靠近，就位并支撑稳固后方可摘钩

C.脚手架上可放置工具、箍筋

D.登高时应将工具随身携带

答案

参考答案：A, B

完形填空

根据对话内容，在每个标有题号的空白处填人一个适当的句子，使对话完整、合乎情景。

A: Be quick, Betty. Your uncle is waiting for you at the school gate.

B: My uncle? No, I don't have an uncle.

A:       小题1:    ?

B: He is my grandpa.

A: Really? But he looks so young.      小题2:     ？ 

B: He is 61.

A: Why is he waiting for you?

B: Today is my grandma's birthday. I will help my grandpa buy some presents for my grandma.

A: Did they buy presents for each other in the past?

B:     小题3:     . They usually bought very special presents for each other.

A:     小题4:   ？

B: They got married in 1976.

A: Does your grandpa still work?

B:     小题5: . He retired (退休) last year.
查看答案
单项选择题

窗宽、窗位的使用原则，错误的是（）

A.计算一幅图像CT值范围的数学式为：C-W/2～C+W/2，C是窗宽，W是窗位

B.目前常用的窗都属于线性窗

C.双窗属于非线性窗

D.宽窗宽通常用于组织密度差别较大的部位

E.窄窗宽通常用于区分组织密度较为接近的图像，如颅脑、肝脏
查看答案