给成人照片X线的能量（），给儿童照片X线能量（），才能获得符合诊断要求的较好的图像。
参考答案：较大；较小
Sorry, I am too busy now. If I________ time, I would certainly go for an outing with you.[ ]
A. have had
B. had had
C. have
D. had
商业银行发放证券公司股票质押贷款，应控制因股票价格波动带来的风险，设立警戒线。警戒线比例（质押股票市值/贷款本金×100％）最低为（）%。
A.100
B.120
C.135
D.150
