长期设置在室外，且桅杆高度在（）m以上，应该设置避雷装置。
A.15
B.20
C.25
D.30
参考答案：B
One or two days ____quite enough to complete the work. ___ you or he going to work with me?
A．is; Is
B．is; Are
C．are; Is
D．are; Are
下列哪一项不是评价营养不良的指标
A．体重下降超过10%B．血浆白蛋白小于30g/LC．血浆转铁蛋白小于200mmol/LD．血糖高于160mg/dLE．握力明显减弱
