顺丁聚合生产中,催化剂陈化时间过长,催化剂稳定性()。
A、差
B、好
C、不变
D、不确定
参考答案:A
Read and tick or cross.阅读短文,判断对(√)错(×)。
Uncle Wang has a farm. It's very big. There are many animals on his farm. Look, the horses and
the cows are in the field. They're eating grass. The rabbits are hopping in the field. The ducks are
swimming in the pond (浊塘). Some chickens are on the ground. The pigs are eating some fruits
under the tree. The dog is inside its house.
( )1. The farm is big.
( )2. There are many animals on Uncle Wang's farm
( )3. The pigs are in the river.
( )4. The ducks are swimming.
( )5. The cat is inside its house.
男性,15岁,头晕、乏力、全身疼痛,伴发热、皮肤紫癜半月余。查体:贫血貌,体温38.5℃,心肺(一),胸骨压痛(+),肝肋下0.5cm,脾肋下0.5cm。
首选的检查是()。
A.骨髓检查
B.血常规
C.血小板抗体检查
D.腹部B超
E.肝功检查