保安从业单位应当定期对保安员进行考核，发现保安员（）或者（）管理制度，需要解除劳动合

Mr. Williams had a lot of boats, and the fishermen borrowed them from him. Mr. Smith and his son, Daniel, borrowed one yesterday. They fished in some places, but caught nothing. Then they found a very good place, and caught about thirty fish there in an hour.

Then it was late, and Mr. Smith said, “Go back now, Daniel.”

Daniel said, “I’m going to come here again tomorrow.”

“Me, too,” said his father, “But how are we going to find the place again?”

Daniel said, “That’s easy. Look! I’ve made a mark on the side of the boat.”

His father laughed and said, “No, that’s foolish! Mr. Williams doesn’t lend us the same boat every time!”

Judge the following sentences true (T) or false (F) .

小题1:Mr. Smith went fishing with his son yesterday.

小题2: At first, Mr. Smith and his son caught only a few fish.

小题3:After they found a new place, they caught about twenty fish in an hour.

小题4: Daniel made a mark on the boat in order to find the same place the next day.

小题5:Not only the son but also the father was foolish.

在DIS描绘电场等势线的实验中：

（1）电源通过正负电极a、b在导电物质上产生的稳定电流分布模拟了由二个___________产生的__________，用____________探测等势点。

（2）在安装实验装置时，正确的做法是[ ]

A．在一块平整木板上依次铺放复写纸、白纸、导电纸

B．导电纸有导电物质的一面应该向上

C．连接电源正负极的电极a、b必须与导电物质保持绝缘

D．连接电极a、b的电源电压为交流4-6V

患者男，72岁，因“胆囊炎”拟全身麻醉下行腹腔镜下胆囊切除术。ASAⅡ级。无明确心、肺疾病。手术开始后约20min刺破门静脉，出血50ml后自行停止。其后患者心率增快，血压突然下降。

错误的处理是（）。

A.立即停止手术

B.气腹排气

C.调整呼吸机参数，轻度过度通气

D.补液及血管活性药物维持血压

E.患者置于头低位右侧卧位

（EMB145）关于TCAS天线说法正确的是（）

A.无方向性天线安装在机身上方，并不提供方向信号

B.无方向性天线不可以和ATC天线互换

C.方向性天线安装在机身上方，并提供方向信号

对环境温度有一定要求，一般在（）范围内才能正常工作。

A、-20～80℃

B、0～55℃

C、-20～50℃

D、0～80℃