第1题:
You are to load styrene in bulk,which is subject to self-polymerization.You must ______.
A.Not carry any cargo in the tanks surrounding the tank loaded with styrene
B.Inject nitrogen to pad any ullage above the styrene to prevent contact with oxygen
C.Be furnished with a Certificate of Inhibition to be maintained on the bridge
D.Use heating coils to maintain the styrene within the temperatures specified by the shipper
第2题:
第3题:
有机磷杀虫剂对胆碱酯酶的抑制作用属于
A.竞争性抑制作用
B.可逆性抑制作用
C.反竞争性抑制作用
D.非竞争性抑制作用
E.不可逆性抑制作用
第4题:
接触抑制(contact inhibition)
第5题:
北京勤邦(原望尔)试剂盒标准曲线要求:(IC50(50%inhibition))与质控报告的数据接近程度,越接近越好。
第6题:
Your tanker is carrying a cargo of styrene.Which of the following is NOT a requirement for carriage of this cargo ________.
A.P/V valves with galvanized parts must be replaced
B.Authorization to carry styrene must be endorsed on the Certificate of Inspection
C.You must have a Certificate of Inhibition provided by the shipper
D.The cargo tank heating coils must be blanked off
第7题:
第8题:
下列哪项抑制作用属竞争性抑制作用
A.砷化合物对巯基酶的抑制作用
B.敌敌畏对胆碱酯酶的抑制作用
C.磺胺类药物对细菌二氢叶酸合成酶的抑制作用
D.重金属盐对某些酶的抑制作用
第9题:
磺胺类药物的抑菌作用属于()
第10题:
竞争性抑制作用(noncompetitive inhibition)