下列属于药用酶的有()。
A.消化酶类
B.消炎酶类
C.抗肿瘤酶类
D.与治疗心脑血管疾病有关的酶类
参考答案:A, B, C, D
机器试车的具体内容有:<1空运转试验<2()试验,<3()试验,<4()试验,<5()试验,<6性能试验。
A crack in the deck plating of a vessel may be temporarily prevented from increasing in length by().
A.cutting a square notch at each end of the crack
B.drilling a hole at each end of crack
C.slot-welding the crack
D.welding a doubler over the crack