关于双代号时标网络计划特点的说法,正确的是()。 A.可以在图上直接显示工作开始与结

题型:单项选择题

问题:

关于双代号时标网络计划特点的说法,正确的是()。

A.可以在图上直接显示工作开始与结束时间和自由时差,但不能显示关键线路.

B.不能在图上直接显示工作开始与结束时间,但可以直接显示自由时差和关键线路

C.可以在图上直接显示工作开始与结束时间,但不能显示自由时差和关键线路

D.可以在图上直接显示工作开始与结束时间、自由时差和关键线路

考点:一级建造师建设工程项目管理一级建造师建设工程项目管理考前冲刺(六)
题型:单项选择题

计算:(ab22÷(-ab)2=______.

题型:单项选择题

鉴定肠杆菌科的基本条件是()。

A.发酵葡萄糖,氧化酶阴性,还原硝酸盐

B.发酵葡萄糖,氧化酶阳性,还原硝酸盐

C.发酵葡萄糖,氧化酶阴性,不还原硝酸盐

D.不发酵葡萄糖,氧化酶阴性,还原硝酸盐

E.不发酵葡萄糖,氧化酶阴性,不还原硝酸盐

题型:单项选择题

One day while a girl was walking in the woods she found two starving songbirds. She took them home and put them in a small (31) . She cared for them and felt great love for them.

Once the (32) and per of the two birds flew from the cage. Therefore, (33) he flew close, she grasped him (34) . She felt glad, but suddenly she felt the bird go limp. She opened her hand and (35) in horror at the dead bird.

She noticed the other bird moving back and forth on the edge of the cage. She could feel his great need for (36) . She lifted him from the cage and (37) him softly into the air. The bird circled once, twice, three times.

The girl watched delightedly at the bird’ s enjoyment. Her heart was no longer (38) with her loss. Suddenly the bird flew closer and (39) softly on her shoulder. It sang the sweetest melody that she had ever heard.

The fastest way to (40) love is to hold on it too tightly, while the best way to keep love is to give it WINGS!

33()

A.because 

B.as 

C.if 

D.since

题型:单项选择题

男孩,6岁,右阴囊发育较左侧小。查体:未查到右侧睾丸,腹压增加时可在右腹股沟上方膨出枣大包块,轻推即消失,消失时常闻及咕噜声。可能的诊断是()

A.右精索静脉曲张

B.右腹股沟脂肪瘤

C.右精索鞘膜积液

D.右腹股沟慢性淋巴结炎

E.右侧隐睾症并腹股沟斜疝

题型:单项选择题

在安装M12×100膨胀螺栓时,钻孔的深度要求是多少:()

A.40mm

B.50mm

C.60mm

D.80mm

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