熔点低于100℃的添加剂有()。
A、Cast
B、GMS
C、二氧化硅
D、1010
参考答案:B
下述哪一项不属于抗凝系统()
A.抗凝血酶Ⅲ(AT-Ⅲ)
B.蛋白C系统
C.组织因子途径抑制物(TFPI)
D.肝素
E.t-PA
-Jenny took the 8:00 bus to Guangzhou this morning.
-Really? He__the 9:00 train. It's much more comfortable and safer to travel by train.
A.could have taken
B.should take
C.must have taken
D.can take